| Date | Category | Player | Score | Opponent | Tournament |
|---|---|---|---|---|---|
| 2020-11-02 | 16 | Erik Nikolić | 7-6(5) 6-1 | Kristian Tumbas Kajgo | HEP HRVATSKI MASTERS 15 - JUNIORI |
| 2020-11-01 | 16 | Erik Nikolić | 7-6(5) 6-0 | Ethan Lovre George Hirons | HEP HRVATSKI MASTERS 15 - JUNIORI |
| 2020-10-31 | 16 | Erik Nikolić | 6-3 6-1 | Kristijan Kolić | HEP HRVATSKI MASTERS 15 - JUNIORI |
| 2020-10-31 | 16 | Erik Nikolić | 6-2 6-0 | Anton Stipetić | HEP HRVATSKI MASTERS 15 - JUNIORI |
| 2020-10-26 | 16 | Erik Nikolić | 6-1 6-2 | Nazar Oliynykov | DVORANSKI BABOLAT ZAGI KUP |
| 2020-10-25 | 16 | Erik Nikolić | 6-4 6-2 | Daniel Jančić | DVORANSKI BABOLAT ZAGI KUP |
| 2020-10-25 | 16 | Erik Nikolić | 6-1 6-1 | Filip Dubovečak | DVORANSKI BABOLAT ZAGI KUP |
| 2020-10-24 | 16 | Erik Nikolić | 6-2 6-1 | Fran Martinović | DVORANSKI BABOLAT ZAGI KUP |
| 2020-09-06 | 18 | Erik Nikolić | 2-6 6-4 7-6(5) | Lovro Majcan | MLADOST OPEN 2020 |
| 2020-09-06 | 18 | Erik Nikolić | 6-2 6-2 | Matija Bulović | MLADOST OPEN 2020 |
| 2020-09-05 | 18 | Erik Nikolić | 6-3 6-1 | Viktor Boban | MLADOST OPEN 2020 |
| 2020-08-29 | 16 | Majcan/Nikolić | 7-5 7-5 | Markovina/Markovina | HEP PRVENSTVO HRVATSKE DO 16 GODINA |
| 2020-08-28 | 16 | Erik Nikolić | 2-6 7-6(0) 6-3 | Patrik Jurina | HEP PRVENSTVO HRVATSKE DO 16 GODINA |
| 2020-08-28 | 16 | Erik Nikolić | 6-0 6-3 | Roko Kačer | HEP PRVENSTVO HRVATSKE DO 16 GODINA |
| 2020-08-28 | 16 | Majcan/Nikolić | 3-6 6-2 10/8 | Dubovečak/Jurlina | HEP PRVENSTVO HRVATSKE DO 16 GODINA |
| 2020-08-27 | 16 | Erik Nikolić | 6-2 6-1 | Vid Marić | HEP PRVENSTVO HRVATSKE DO 16 GODINA |
| 2020-08-27 | 16 | Majcan/Nikolić | 6-4 5-7 10/2 | Kljaić/Marić | HEP PRVENSTVO HRVATSKE DO 16 GODINA |
| 2020-06-07 | 18 | Erik Nikolić | 6-0 6-3 | Dino Prižmić | REGIONALNO PRVENSTVO GRADA ZAGREBA |
| 2020-06-07 | 18 | Erik Nikolić | 6-4 7-5 | Daniel Jančić | REGIONALNO PRVENSTVO GRADA ZAGREBA |
| 2020-06-06 | 18 | Erik Nikolić | 6-4 7-5 | Vito Horvat | REGIONALNO PRVENSTVO GRADA ZAGREBA |
| 2020-01-20 | 16 | Erik Nikolić | 6-4 7-6(5) | Leon Babić Brajko | DVORANSKO BABOLAT ZAGI KUP |
| 2020-01-19 | 16 | Erik Nikolić | 6-4 6-2 | Bruno Balić | DVORANSKO BABOLAT ZAGI KUP |
| 2020-01-19 | 16 | Erik Nikolić | 6-1 6-0 | Vid Marić | DVORANSKO BABOLAT ZAGI KUP |
| 2020-01-18 | 16 | Erik Nikolić | 6-0 6-0 | Ivan Horvat | DVORANSKO BABOLAT ZAGI KUP |
| 2019-11-29 | 18 | Erik Nikolić | 6-0 6-2 | Dorian Škreb | PREDKVALIFIKACIJE - JUNIOR ZAGREB CUP ITF 18 |
| 2019-11-25 | 16 | Erik Nikolić | 7-5 2-6 6-2 | Dorian Vasung | DVORANSKI BABOLAT ZAGI KUP |
| 2019-11-24 | 16 | Erik Nikolić | 6-0 7-5 | Stjepan Majcan | DVORANSKI BABOLAT ZAGI KUP |
| 2019-11-24 | 16 | Erik Nikolić | 6-4 5-7 6-1 | Stefan Djokić | DVORANSKI BABOLAT ZAGI KUP |
| 2019-11-23 | 16 | Erik Nikolić | 6-3 6-1 | Luka Vojvodić | DVORANSKI BABOLAT ZAGI KUP |
| 2019-11-16 | 18 | Erik Nikolić | 6-2 6-2 | Karlo Krolo | DVORANSKO OP TK OGULIN |
| 2019-11-16 | 18 | Erik Nikolić | 6-1 6-0 | Borna Katalenić | DVORANSKO OP TK OGULIN |
| 2019-11-04 | 16 | Erik Nikolić | W.O. | Andrej Dominić | MASTERS 15 - JUNIORI |
| 2019-11-03 | 16 | Erik Nikolić | 6-1 6-4 | Ivan Šodan | MASTERS 15 - JUNIORI |
| 2019-11-03 | 16 | Erik Nikolić | 3-6 6-4 6-4 | Lovro Majcan | MASTERS 15 - JUNIORI |
| 2019-11-02 | 16 | Erik Nikolić | 6-4 6-1 | Emanuel Ivkić | MASTERS 15 - JUNIORI |
| 2019-10-27 | 16 | Erik Nikolić | 6-2 7-6(4) | Ante Petar Ercegović | DVORANSKI BABOLAT ZAGI KUP |
| 2019-10-27 | 16 | Erik Nikolić | 6-3 3-6 6-3 | Stefan Djokić | DVORANSKI BABOLAT ZAGI KUP |
| 2019-10-26 | 16 | Erik Nikolić | 6-4 6-4 | Josip Šimundža | DVORANSKI BABOLAT ZAGI KUP |
| 2019-10-26 | 16 | Erik Nikolić | 6-3 6-3 | Vilim Karačić | DVORANSKI BABOLAT ZAGI KUP |
| 2019-10-20 | 16 | Erik Nikolić | 6-2 6-2 | Matija Margetić | DVORANSKO OP TK OGULIN |
| 2019-10-20 | 16 | Erik Nikolić | 6-1 6-2 | Luka Neralić | DVORANSKO OP TK OGULIN |
| 2019-10-19 | 16 | Erik Nikolić | 6-7(2) 6-4 RET. | Dorian Salopek | DVORANSKO OP TK OGULIN |
| 2019-07-15 | 16 | Erik Nikolić | 6-2 6-2 | Stefan Djokić | OP MEDVEŠČAKA |
| 2019-07-14 | 16 | Djokić/Nikolić | 7-6(2) 6-2 | Kljaić/Štabek | OP MEDVEŠČAKA |
| 2019-07-14 | 16 | Djokić/Nikolić | 6-3 6-3 | Horvat/Jančić | OP MEDVEŠČAKA |
| 2019-07-14 | 16 | Erik Nikolić | 6-0 6-0 | Borna Jaki | OP MEDVEŠČAKA |
| 2019-07-14 | 16 | Erik Nikolić | 6-1 6-4 | Vilim Karačić | OP MEDVEŠČAKA |
| 2019-07-13 | 16 | Erik Nikolić | 6-3 6-3 | Vid Marić | OP MEDVEŠČAKA |
| 2019-07-08 | 16 | Erik Nikolić | 6-1 7-5 | Andrej Dominić | ŠALATA OPEN |
| 2019-07-08 | 16 | Jančić/Nikolić | 3-6 7-5 10/6 | Dominić/Oštro | ŠALATA OPEN |
| 2019-07-08 | 16 | Jančić/Nikolić | 6-0 6-0 | Jakšić/Miniri | ŠALATA OPEN |
| 2019-07-07 | 16 | Erik Nikolić | 6-3 6-4 | Tin Oštro | ŠALATA OPEN |
| 2019-07-07 | 16 | Erik Nikolić | 6-4 6-1 | Egor Michurin | ŠALATA OPEN |
| 2019-07-06 | 16 | Erik Nikolić | 6-3 6-0 | Vito Horvat | ŠALATA OPEN |
| 2019-07-06 | 16 | Jančić/Nikolić | 6-2 3-6 10/7 | Horvat/Michurin | ŠALATA OPEN |
| 2019-07-01 | 16 | Erik Nikolić | 6-3 6-3 | Antonio Voljavec | SAN SPIN CUP |
| 2019-06-30 | 16 | Erik Nikolić | 6-3 6-2 | Egor Michurin | SAN SPIN CUP |
| 2019-06-30 | 16 | Erik Nikolić | W.O. | Noa Kljaić | SAN SPIN CUP |
| 2019-06-30 | 16 | Jamić/Nikolić | 4-6 6-1 10/6 | Jančić/Štabek | SAN SPIN CUP |
| 2019-06-29 | 16 | Erik Nikolić | 6-0 6-0 | Lance Ian Urlaub | SAN SPIN CUP |
| 2019-06-29 | 16 | Jamić/Nikolić | 6-3 6-1 | Kljaić/Marić | SAN SPIN CUP |
| 2019-06-10 | 14 | Erik Nikolić | 6-2 6-0 | Vilim Karačić | ŠALATA OPEN |
| 2019-06-10 | 14 | Erik Nikolić | 6-0 6-1 | Luka Plosnić | ŠALATA OPEN |
| 2019-06-10 | 14 | Jamić/Nikolić | 6-2 3-6 11/9 | Horvatić/Oliynykov | ŠALATA OPEN |
| 2019-06-09 | 14 | Erik Nikolić | 6-2 6-2 | Jurica Jamić | ŠALATA OPEN |
| 2019-06-09 | 14 | Erik Nikolić | 6-1 6-2 | Damjan Kvakan | ŠALATA OPEN |
| 2019-06-09 | 14 | Jamić/Nikolić | 7-5 7-5 | Kvakan/Slivar | ŠALATA OPEN |
| 2019-06-08 | 14 | Jamić/Nikolić | 6-0 6-0 | Božičević/Novaković | ŠALATA OPEN |
| 2019-06-03 | 14 | Erik Nikolić | 6-1 6-3 | Dorian Salopek | 46. MEMORIJAL MARIJANA ORŠANIĆA |
| 2019-06-02 | 14 | Erik Nikolić | 6-4 6-0 | Emanuel Ivkić | 46. MEMORIJAL MARIJANA ORŠANIĆA |
| 2019-06-02 | 14 | Erik Nikolić | 6-4 6-4 | Abbas Nazarov | 46. MEMORIJAL MARIJANA ORŠANIĆA |
| 2019-06-01 | 14 | Erik Nikolić | 6-0 6-0 | Beka Pižurica | 46. MEMORIJAL MARIJANA ORŠANIĆA |
| 2019-05-22 | 14 | Erik Nikolić | 6-3 6-4 | Luka Plosnić | PRVENSTVO HRVATSKE DO 14 GODINA |
| 2019-05-22 | 14 | Baničević/Nikolić | 3-6 6-4 10/7 | Kuna/Plosnić | PRVENSTVO HRVATSKE DO 14 GODINA |
| 2019-03-24 | 16 | Erik NIKOLIC | 6-3 7-6(2) | Matija Margetić | OP TK RAGUSA |
| 2019-03-24 | 16 | Erik NIKOLIC | 6-3 6-2 | Ammar Hrapovic | OP TK RAGUSA |
| 2019-03-24 | 16 | Erik NIKOLIC | 6-0 6-1 | Roko Mađor | OP TK RAGUSA |
| 2019-03-24 | 16 | Kržić/Nikolić | 7-6(3) 4-6 10/4 | Hrapovic/Margetić | OP TK RAGUSA |
| 2019-03-23 | 16 | Erik NIKOLIC | 7-5 6-4 | Roko Asanović | OP TK RAGUSA |
| 2019-03-23 | 16 | Kržić/Nikolić | 6-0 6-0 | Bekić/Maričić | OP TK RAGUSA |
| 2019-03-18 | 14 | Erik Nikolić | 7-5 6-4 | Dorian Salopek | LOšINJ-JADRANKA KUP |
| 2019-03-17 | 14 | Erik Nikolić | 6-4 6-1 | Luka Jurlina | LOšINJ-JADRANKA KUP |
| 2019-03-17 | 14 | Erik Nikolić | 6-1 6-0 | Antun Bekić | LOšINJ-JADRANKA KUP |
| 2019-03-17 | 14 | Kržić/Nikolić | 6-3 4-6 10/8 | Bradvić/Kvakan | LOšINJ-JADRANKA KUP |
| 2019-03-16 | 14 | Kržić/Nikolić | 4-6 6-1 10/6 | Baničević/Bogdan | LOšINJ-JADRANKA KUP |
| 2019-02-24 | 14 | Erik Nikolić | 6-2 7-5 | Fran Kuna | TK OLIMPIJA YONEX CUP |
| 2019-02-24 | 14 | Erik Nikolić | 4-1 RET. | Tin Kržić | TK OLIMPIJA YONEX CUP |
| 2019-02-23 | 14 | Erik Nikolić | 6-1 6-1 | Luka Gaić | TK OLIMPIJA YONEX CUP |
| 2019-02-11 | 14 | Erik Nikolić | 4-6 6-3 6-3 | Fran Rakonić | DVORANSKO BABOLAT ZAGI KUP |
| 2019-02-10 | 14 | Erik Nikolić | 6-0 6-2 | Tin Kržić | DVORANSKO BABOLAT ZAGI KUP |
| 2019-02-10 | 14 | Erik Nikolić | 6-4 6-1 | Roko Babić | DVORANSKO BABOLAT ZAGI KUP |
| 2019-02-09 | 14 | Erik Nikolić | 6-0 6-0 | Abbas Nazarov | DVORANSKO BABOLAT ZAGI KUP |
| 2019-02-09 | 14 | Erik Nikolić | 6-3 6-1 | Filip Dubovečak | DVORANSKO BABOLAT ZAGI KUP |
| 2019-01-14 | 14 | Erik Nikolić | 4-6 6-2 6-3 | Dorian Salopek | DVORANSKI BABOLAT ZAGI KUP |
| 2019-01-13 | 14 | Erik Nikolić | 6-3 6-1 | Max Ivan Horvatić | DVORANSKI BABOLAT ZAGI KUP |
| 2019-01-13 | 14 | Erik Nikolić | 6-4 7-5 | Marko Baničević | DVORANSKI BABOLAT ZAGI KUP |
| 2019-01-12 | 14 | Erik Nikolić | 6-3 6-0 | Ilija Kopić | DVORANSKI BABOLAT ZAGI KUP |
| 2019-01-08 | 14 | Erik Nikolić | 2-6 6-4 7-5 | Antonio Voljavec | DVORANSKO PRVENSTVO HRVATSKE DJEČACI |
| 2019-01-07 | 14 | Erik Nikolić | 6-0 6-3 | Ethan Lovre George Hirons | DVORANSKO PRVENSTVO HRVATSKE DJEČACI |
| 2019-01-07 | 14 | Erik Nikolić | 6-2 6-3 | Dominik Sabolić | DVORANSKO PRVENSTVO HRVATSKE DJEČACI |
| 2019-01-06 | 14 | Erik Nikolić | 6-2 6-4 | Kristijan Kolić | DVORANSKO PRVENSTVO HRVATSKE DJEČACI |
| 2019-01-06 | 14 | Adlašić/Nikolić | 6-2 6-2 | Rakonić/Voljavec | DVORANSKO PRVENSTVO HRVATSKE DJEČACI |
| 2018-12-30 | 14 | Erik Nikolić | 6-1 3-6 6-4 | Lovro Majcan | DVORANSKI BABOLAT ZAGI KUP |
| 2018-12-30 | 14 | Erik Nikolić | 6-3 6-4 | Marko Bradvić | DVORANSKI BABOLAT ZAGI KUP |
| 2018-12-29 | 14 | Erik Nikolić | 6-1 6-1 | Dario Marinović | DVORANSKI BABOLAT ZAGI KUP |
| 2018-12-17 | 14 | Erik Nikolić | 6-3 6-0 | Patrik Jurina | DVORANSKI BABOLAT ZAGI KUP |
| 2018-12-17 | 14 | Erik Nikolić | 6-4 7-5 | Karlo Klaić | DVORANSKI BABOLAT ZAGI KUP |
| 2018-12-16 | 14 | Erik Nikolić | 7-6(4) 6-7(4) 7-5 | Edin Mulalić | DVORANSKI BABOLAT ZAGI KUP |
| 2018-12-16 | 14 | Erik Nikolić | 6-1 6-4 | Marcos Šveljo | DVORANSKI BABOLAT ZAGI KUP |
| 2018-12-15 | 14 | Erik Nikolić | 6-4 6-4 | Luka Vuglar | DVORANSKI BABOLAT ZAGI KUP |
| 2018-11-18 | 14 | Erik Nikolić | 6-1 6-3 | Lovro Majcan | DVORANSKI BABOLAT ZAGI KUP |
| 2018-11-18 | 14 | Erik Nikolić | 7-6(2) 6-3 | Noa Kljaić | DVORANSKI BABOLAT ZAGI KUP |
| 2018-11-17 | 14 | Erik Nikolić | 6-1 6-1 | Jurica Jamić | DVORANSKI BABOLAT ZAGI KUP |
| 2018-11-03 | 14 | Erik Nikolić | 6-3 7-6(6) | Dorian Salopek | Masters 13 Dječaci |
| 2018-10-28 | 14 | Erik Nikolić | 4-6 6-3 6-3 | Borna Jagetić | DVORANSKO OP TK PONIKVE |
| 2018-10-27 | 14 | Erik Nikolić | 7-6(5) 6-0 | Kristijan Kolić | DVORANSKO OP TK PONIKVE |
| 2018-10-15 | 14 | Erik Nikolić | 1-6 6-3 6-0 | Antonio Voljavec | DVORANSKI BABOLAT ZAGI KUP |
| 2018-10-14 | 14 | Erik Nikolić | 5-2 RET. | Leon Soldatić | DVORANSKI BABOLAT ZAGI KUP |
| 2018-10-14 | 14 | Erik Nikolić | 6-4 6-3 | Luka Neralić | DVORANSKI BABOLAT ZAGI KUP |
| 2018-10-13 | 14 | Erik Nikolić | 6-1 6-1 | Jakov Halambek | DVORANSKI BABOLAT ZAGI KUP |
| 2018-10-08 | 14 | Erik Nikolić | 6-1 6-3 | Stjepan Ivanek | OP TK VARTEKS |
| 2018-10-08 | 14 | Erik Nikolić | 6-3 6-7(5) 6-1 | Noa Kljaić | OP TK VARTEKS |
| 2018-10-07 | 14 | Erik Nikolić | 6-2 6-3 | Tomo Vertuš | OP TK VARTEKS |
| 2018-10-06 | 14 | Erik Nikolić | 6-1 6-1 | Stjepan Bogdan | OP TK VARTEKS |
| 2018-10-06 | 14 | Erik Nikolić | 6-1 6-0 | Karlo Hanzl | OP TK VARTEKS |
| 2018-09-09 | 14 | Erik Nikolić | 6-2 6-1 | Filip Rihtar | MEMORIJAL KARLA PLAZANIĆA |
| 2018-09-09 | 14 | Erik Nikolić | 6-3 6-3 | Dominik Sabolić | MEMORIJAL KARLA PLAZANIĆA |
| 2018-09-08 | 14 | Erik Nikolić | 6-1 6-2 | Luka Jurlina | MEMORIJAL KARLA PLAZANIĆA |
| 2018-09-08 | 14 | Erik Nikolić | 6-1 6-0 | Mirko Škrinjar | MEMORIJAL KARLA PLAZANIĆA |
| 2018-09-08 | 14 | Nikolić/Rihtar | 6-1 6-2 | Jurlina/Kopić | MEMORIJAL KARLA PLAZANIĆA |
| 2018-09-08 | 14 | Nikolić/Rihtar | 6-0 6-0 | Juras/Tomić | MEMORIJAL KARLA PLAZANIĆA |
| 2018-08-26 | 14 | Erik Nikolić | 6-3 6-3 | Antonio Voljavec | OP TK HRVOJE |
| 2018-08-25 | 14 | Erik Nikolić | 6-4 7-5 | Filip Ferega | OP TK HRVOJE |
| 2018-08-25 | 14 | Erik Nikolić | 6-3 6-3 | Dominik Sabolić | OP TK HRVOJE |
| 2018-08-24 | 14 | Erik Nikolić | 6-2 6-1 | Matija Bulović | OP TK HRVOJE |
| 2018-08-24 | 14 | Marić/Nikolić | 5-7 6-2 10/0 | Horvatić/Voljavec | OP TK HRVOJE |
| 2018-08-24 | 14 | Marić/Nikolić | 4-6 6-0 10/3 | Martinović/Obućina | OP TK HRVOJE |
| 2018-07-24 | 14 | Erik Nikolić | 6-2 6-1 | Abbas Nazarov | OP PREČKOG |
| 2018-07-24 | 14 | Erik Nikolić | 6-4 6-1 | Vilim Karačić | OP PREČKOG |
| 2018-07-24 | 14 | Erik Nikolić | 6-0 6-2 | Nazar Oliynykov | OP PREČKOG |
| 2018-07-24 | 14 | Erik Nikolić | 7-5 6-1 | Vid Marić | OP PREČKOG |
| 2018-07-24 | 14 | Jamić/Nikolić | 7-5 6-4 | Kljaić/Marić | OP PREČKOG |
| 2018-07-24 | 14 | Jamić/Nikolić | 6-2 7-5 | Marić/Slivar | OP PREČKOG |
| 2018-07-23 | 14 | Erik Nikolić | 6-3 6-4 | Stjepan Ivanek | OP PONIKVA |
| 2018-07-22 | 14 | Erik Nikolić | 6-3 6-2 | Denis Adlašić | OP PONIKVA |
| 2018-07-22 | 14 | Erik Nikolić | 6-1 7-6(4) | Nazar Oliynykov | OP PONIKVA |
| 2018-07-21 | 14 | Erik Nikolić | 7-6(3) 6-0 | Mario Popović | OP PONIKVA |
| 2018-06-11 | 14 | Erik Nikolić | 6-2 2-6 6-3 | Dorian Salopek | ŠALATA OPEN |
| 2018-06-11 | 14 | Erik Nikolić | 2-6 6-1 4-0 RET. | Abbas Nazarov | ŠALATA OPEN |
| 2018-06-10 | 14 | Erik Nikolić | 6-4 6-3 | Daniel Jančić | ŠALATA OPEN |
| 2018-06-10 | 14 | Erik Nikolić | 6-1 6-2 | Marcos Šveljo | ŠALATA OPEN |
| 2018-06-10 | 14 | Nikolić/Oliynykov | 6-4 6-4 | Ferega/Jančić | ŠALATA OPEN |
| 2018-06-10 | 14 | Nikolić/Oliynykov | 6-2 7-5 | Bradvić/Severović | ŠALATA OPEN |
| 2018-06-09 | 14 | Erik Nikolić | 2-6 6-1 6-3 | Vid Marić | ŠALATA OPEN |
| 2018-06-04 | 14 | Erik Nikolić | 4-6 7-5 7-5 | Dorian Salopek | 45. MEMORIJAL MARIJANA ORŠANIĆA |
| 2018-06-04 | 14 | Horvatić/Nikolić | 6-1 6-4 | Ivanišević/Salopek | 45. MEMORIJAL MARIJANA ORŠANIĆA |
| 2018-06-03 | 14 | Erik Nikolić | 6-4 4-6 6-4 | Vito Ivanišević | 45. MEMORIJAL MARIJANA ORŠANIĆA |
| 2018-06-03 | 14 | Erik Nikolić | 6-2 6-2 | Jurica Jamić | 45. MEMORIJAL MARIJANA ORŠANIĆA |
| 2018-06-02 | 14 | Erik Nikolić | 6-2 6-2 | Anton Stipetić | 45. MEMORIJAL MARIJANA ORŠANIĆA |
| 2018-06-02 | 14 | Horvatić/Nikolić | 6-3 7-6(5) | Dubovečak/Kržić | 45. MEMORIJAL MARIJANA ORŠANIĆA |
| 2018-06-02 | 14 | Horvatić/Nikolić | 6-4 6-2 | Jurlina/Nazarov | 45. MEMORIJAL MARIJANA ORŠANIĆA |
| 2018-05-28 | 14 | Erik Nikolić | 6-1 2-6 7-5 | Emanuel Ivkić | 25. OP OPATIJE |
| 2018-05-27 | 14 | Erik Nikolić | 6-2 7-5 | Daniel Jančić | 25. OP OPATIJE |
| 2018-05-27 | 14 | Erik Nikolić | 7-5 6-3 | Tin Kržić | 25. OP OPATIJE |
| 2018-05-27 | 14 | Jurlina/Nikolić | 7-5 7-5 | Ivkić/Jančić | 25. OP OPATIJE |
| 2018-05-26 | 14 | Erik Nikolić | 6-3 6-3 | Ian Priskić | 25. OP OPATIJE |
| 2018-05-26 | 14 | Jurlina/Nikolić | 6-7(5) 6-4 10/8 | Dubovečak/Kržić | 25. OP OPATIJE |
| 2018-05-14 | 14 | Erik NIKOLIĆ | 6-1 6-2 | Daniel JANČIĆ | OP TRNJA |
| 2018-05-13 | 14 | Erik NIKOLIĆ | 7-5 0-6 6-2 | Nazar OLIYNYKOV | OP TRNJA |
| 2018-05-13 | 14 | Erik NIKOLIĆ | 6-4 7-6(3) | Vid MARIĆ | OP TRNJA |
| 2018-05-12 | 14 | Erik NIKOLIĆ | 6-3 6-3 | Karlo BURIĆ | OP TRNJA |
| 2018-05-12 | 14 | Nikolić/Đerek | 4-6 6-2 10/8 | Marić/Štabek | OP TRNJA |
| 2018-05-05 | 16 | Erik NIKOLIĆ | 6-3 6-0 | Tin SAMAC | OP TRNJA |
| 2018-05-05 | 16 | Jamić/Nikolić | 6-1 6-1 | Brkić/Ivičić | OP TRNJA |
| 2018-04-22 | 16 | Erik NIKOLIĆ | 6-4 6-3 | Tin SAMAC | REGIONALNO PRVENSTVO GRADA ZAGREB |
| 2018-04-22 | 16 | Erik NIKOLIĆ | 6-1 6-3 | Tin SAMAC | REGIONALNO PRVENSTVO GRADA ZAGREB |
| 2018-04-21 | 16 | Erik NIKOLIĆ | 6-3 6-2 | Tin KRŽIĆ | REGIONALNO PRVENSTVO GRADA ZAGREB |
| 2018-04-21 | 16 | Erik NIKOLIĆ | 6-3 7-5 | Matija BULOVIĆ | REGIONALNO PRVENSTVO GRADA ZAGREB |
| 2018-04-07 | 14 | Erik NIKOLIĆ | 6-2 6-4 | Antonio VOLJAVEC | REGIONALNO PRVENSTVO GRADA ZAGREB |
| 2018-04-07 | 14 | Horvatić/Nikolić | 6-3 2-6 10/8 | Boban/MARIĆ | REGIONALNO PRVENSTVO GRADA ZAGREB |
| 2018-04-07 | 14 | Horvatić/Nikolić | 6-3 6-1 | KRŽIĆ/ŠTABEK | REGIONALNO PRVENSTVO GRADA ZAGREB |
| 2018-04-06 | 14 | Erik NIKOLIĆ | 6-0 6-3 | Abbas NAZAROV | REGIONALNO PRVENSTVO GRADA ZAGREB |
| 2018-04-06 | 14 | Horvatić/Nikolić | 6-4 7-6(4) | Dubovečak/Voljavec | REGIONALNO PRVENSTVO GRADA ZAGREB |
| 2018-03-11 | 14 | Erik NIKOLIĆ | 4-6 6-1 6-2 | Noa KLJAIĆ | DVORANSKI BABOLAT ZAGI KUP |
| 2018-03-11 | 14 | Erik NIKOLIĆ | 6-4 7-6(5) | Jurica JAMIĆ | DVORANSKI BABOLAT ZAGI KUP |
| 2018-03-10 | 14 | Erik NIKOLIĆ | 6-2 7-5 | Beka PIŽURICA | DVORANSKI BABOLAT ZAGI KUP |
| 2018-03-04 | 14 | Erik NIKOLIĆ | 6-2 6-3 | Abbas NAZAROV | DVORANSKO OP PONIKVA 14 |
| 2018-03-03 | 14 | Erik NIKOLIĆ | 6-3 4-6 6-4 | Noa KLJAIĆ | DVORANSKO OP PONIKVA 14 |
| 2018-02-10 | 14 | Erik NIKOLIĆ | 6-3 7-5 | Viktor BOBAN | DVORANSKI BABOLAT ZAGI KUP 14 |
| 2018-02-10 | 14 | Erik NIKOLIĆ | 6-1 6-1 | Marko BRADVIĆ | DVORANSKI BABOLAT ZAGI KUP 14 |