
Biography
William Matthew Sierra is an American former professional wrestling referee and manager better known by his ring name Bill Alfonso. He achieved his greatest success in Extreme Championship Wrestling in the mid-to-late 1990s. He is well known for the whistle that was almost always hanging around his neck, which he blew constantly during his wrestlers' matches In May 1995, he made his debut in Extreme Championship Wrestling as a "trouble-shooting referee". Introduced by Shane Douglas, he angered many ECW fans with strict enforcement of the rules and disqualifications of wrestlers for such ECW traditions as using steel chairs as weapons. n this role, he engaged in a feud with ECW founder Tod Gordon that resulted in several wrestling matches.
Known For
The Ref Didn’t See It! (2025)Age: 68as Bill Alfonso
The WRLD on GCW (2022)Age: 65as Bill Alfonso
Battleground Championship Wrestling (2021)Age: 64as Bill Alfonso
WrestleCade Supershow 2019 (2019)Age: 62as Bill Alfonso
WWE: Undertaker 20-0 - The Streak (2012)Age: 55as Bill Alfonso - Referee (archive footage)
WWE: Blood Sport ECW - The Most Violent Matches (2006)Age: 49
ECW: Bloodsport The Most Violent Matches (2006)Age: 49as Bill Alfonso
Hardcore Homecoming (2005)Age: 48as Bill Alfonso (Manager)
MLW War Games (2003)Age: 46as Bill Alfonso
MLW Rise of The Renegades (2003)Age: 46





