William Powers ha enfrentado a 84 oponentes a lo largo de su carrera.

Player Team(s) Games
Maurice Acker 8
Brian Addison 3
Stanislav Baldovsky 6
Robert Becarik 4
Stefan Becarik 8
Martin Bilik 2
Horace Bond
Iskra Svit (SVK-1)
1
Daniel Boor 2
John Boyer
Iskra Svit (SVK-1)
1
Kevin Bridgewaters 2
Adam Buday
Iskra Svit (SVK-1)
1
Goran Bulatovic 2
Dwight Burke 2
J.R. Cadot
SPU Nitra (SVK-1)
1
Wesley Channels
Iskra Svit (SVK-1)
1
Enique Clemons 1
Zack Crimmins 2
Ivica Cvitanovic 1
Noah Dahlman 1
Nenad Delic 1
Bogoljub Devrnja 1
Peter Dorazil 1
Lukas Dubovsky 2
N'Gai Evans 7
Brandon Fields 3
Roman Findura
Iskra Svit (SVK-1)
1
Timothy Frost 6
Stjepan Gavran 1
Deremy Geiger
SPU Nitra (SVK-1)
1
Milan Golian 2
Justin Graham 1
Richard Grznar 2
Juraj Hasan
SPU Nitra (SVK-1)
1
Ondrej Haviar 2
Vladimir Hovanak 8
Clarence Jackson 1
Sasa Jankovic 1
Willie Kemp 3
Peter Kiss 1
Branislav Koczkas 1
Richard Korner 1
Viliam Kosa
SPU Nitra (SVK-1)
1
Maj Kovacevic
SPU Nitra (SVK-1)
1
Michal Kozar 8
Marek Kozlik 2
Jan Kratochvil 2
Andrej Kuffa 1
Filip Lehman 3
Chris Lowe 2
Aco Mandic 8
Matej Marchyn 2
Julian Mascoll
Iskra Svit (SVK-1)
1
Michal Maslik 1
Anthony McClain
SPU Nitra (SVK-1)
1
Tyronne McNeal
Iskra Svit (SVK-1)
1
Martin Micka
Iskra Svit (SVK-1)
1
Nenad Milosevic 2
Tomas Mrvis 3
Jaroslav Musil 1
Paul Nelson 1
Jakub Novysedlak 1
Robert Nuber 3
Salih Nuhanovic 3
Michal Podhorsky 2
Martin Rancik 2
Maros Rendla 1
Viliam Ridzon 1
Peter Sedmak 1
Jeremy Simmons 3
Vincent Simpson 2
Sven Smajlagic 1
Sean Smith
Iskra Svit (SVK-1)
1
Ondrej Soska 1
Amin Stevens 2
Kevin Thompson 2
Branislav Tomek
SPU Nitra (SVK-1)
1
Alando Tucker 1
Otto Ulman 7
Richard Urland 2
Roman Vido 2
Jozef Vojtek 3
Peter Vojtek 2
Eduard Znanec
Iskra Svit (SVK-1)
1
Rene Zvan
SPU Nitra (SVK-1)
1