William Antonio ha enfrentado a 119 oponentes a lo largo de su carrera.

Player Team(s) Games
Dylan Ababou 2
Japeth Aguilar 4
Marc Agustin 1
Jimmy Alapag 2
Don Allado 2
Richard Alvarez 1
Jimbo Aquino 2
Jose Redempto Aquino 1
Ryan Arana 8
Wynne Arboleda 2
Paul Artadi 2
Leo Avenido 1
Siverino Baclao 1
Cyrus Baguio 2
Jason Ballesteros 1
Marnel Baracael 2
Mark Barroca 3
Beau Belga 8
Mark Borboran 2
Ronjay Buenafe 8
Paolo Bugia 2
Alex Cabagnot 1
Brandon Cablay 1
Mark Caguioa 1
Nino Canaleta 1
Mark Angelo Canlas 1
Vaughn Canta 2
Mark Cardona 2
Harvey Carey 4
Jayson Castro 4
Jeffrei Chan 8
Mike Cortez 1
Jervy Cruz 8
Bonifacio Custodio 2
Dennis Daa 1
Anthony De La Cruz 2
Yancy De Ocampo 2
Ranidel De Ocampo 4
Joe Devance 3
Jared Dillinger 3
Axel Doruelo 1
Joselito Duncil 2
Samigue Eman 2
Pong Escobal 1
Gabby Espinas 2
Elmer Espiritu 2
Larry Fonacier 4
Riego Gamalinda 3
Lou Gatumbato 2
Rey Guevarra 1
Anthony Helterbrand 1
Borgie Hermida 1
Paolo Hubalde 1
Reynel Hugnatan 2
Jireh Ibanes 8
Danny Ildefonso 1
JC Intal 1
Mark Isip 2
Chito Jaime 1
Rafael Joey Jazul 2
Robert Labagala 1
Chico Lanete 2
Gilbert Lao 2
Paul Lee 8
Christopher Lutz 1
Mark Macapagal 2
Rico Maierhofer 1
Ronnie Matias 8
Benedicto Membrere 2
Rogemar Menor 2
Solomon Mercado 2
Willie Miller 2
Dennis Miranda 1
Khazim Mirza 1
Leo Najorda 1
Gabe Norwood 8
Nelbert Omolon 2
Emmerson Oreta 2
Ali Peek 2
Dorian Pena 2
Mick Pennisi 2
Marc Pingris 3
Joseph Ronald Quinahan 7
Kerby Raymundo 3
John Raymundo 3
Rafi Reavis 3
Robert Reyes 1
Jay-R Reyes 2
Ryan Reyes 3
Renren Ritualo 2
Larry Rodriguez 8
Eric Salamat 2
Sunday Salvacion 2
Jondan Salvador 1
Arwind Santos 1
Homer Se 2
Danny Seigle 2
James Sena 2
Carlo Sharma 1
Peter Simon 3
Magi King Sison 2
Paul Sorongon 1
Tyrone Tang 6
Asi Taulava 2
Lewis Alfred Tenorio 2
Joachim Thoss 2
Chris Timberlake 2
Ronald Tubid 1
Joshua Urbiztondo 3
Jonathan Uyloan 2
Enrico Villanueva 1
Shawn Weinstein 1
Kelly Williams 4
Willy Wilson 1
John Wilson 1
James Yap 3
Roger Yap 3
Mark Yee 2
Joseph Yeo 1