Nikolay Kosev ha enfrentado a 57 oponentes a lo largo de su carrera.

Player Team(s) Games
Ivan Alipiev 1
Georgi Barzakov 1
Leonid Bazhanov 1
Milcho Borisov
UE Varna (BUL-2)
1
Milen Cholakov
Shumen (BUL-2)
1
Anton Dikov
UE Varna (BUL-2)
1
Teodor Dimitrov
Shumen (BUL-2)
1
Lachezar Dimitrov 1
Aleksandar Dimitrov 1
Andrey Djambazov
Shumen (BUL-2)
2
Milen Dudev
UE Varna (BUL-2)
1
Pavlin Ganchev 1
Nikolay Georgiev
UE Varna (BUL-2)
1
Nikolay Georgiev
Shumen (BUL-2)
2
Kristiyan Georgiev 1
Martin Gorunov 1
Venelin Hristov
UE Varna (BUL-2)
1
Georgi Hristov 1
Dimitar Iliev
UE Varna (BUL-2)
1
Andrey Ivanov
Shumen (BUL-2)
2
Denislav Ivanov 1
Ivko Ivkov 1
Filip Kamenov 1
Kiril Kirilov
Shumen (BUL-2)
1
Todor Kolev 1
Kristiyan Krastev
UE Varna (BUL-2)
1
Georgi Kuchkov 1
Daniel Kuntorov 1
Tsvetomir Kurtev
UE Varna (BUL-2)
1
Nikolay Lekov 1
Lubomir Lilov 1
Nikolay Marinov 1
Marin Marinov 1
Nikolay Mihaylov 1
Aleksandar Milov 1
Tsenko Nakov 1
Angel Natskin
UE Varna (BUL-2)
1
Nikolay V. Nikolov
UE Varna (BUL-2)
1
Nikola Nikolov
Shumen (BUL-2)
2
Andrey Petkov 1
Kamen Petkov 1
Denis Petkov 1
Julian Rachev
Shumen (BUL-2)
1
Dimitar Radev
Shumen (BUL-2)
2
Mersin Sali
Shumen (BUL-2)
1
Viktor Serafimov
Shumen (BUL-2)
2
Stanislav Slaveykov 1
Aleksandar Stoimenov 1
Mihail Tanev 1
Ivaylo Todorov
UE Varna (BUL-2)
1
Rostislav Tonchev
Shumen (BUL-2)
2
Manol Tonchev
Shumen (BUL-2)
2
Lachezar Vezirski 1
Georgi Yankov
UE Varna (BUL-2)
1
Yanko Yankov
Shumen (BUL-2)
1
Gabriel Yonkov 1
Todor Zahariev 1