William Sierra

William Sierra

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 r...

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also starring William Sierra
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The WRLD on GCW

As Bill Alfonso

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ECW Guilty as Charged 2000

As Bill Alfonso (Manager)

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ECW Fan Cam: November 23, 1996

As Bill Alfonso (Manager)

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ECW Fan Cam: October 31, 1997

As Bill Alfonso (Manager)

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ECW Fan Cam: October 18, 1996

As Bill Alfonso (Manager)

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ECW Fan Cam: September 17, 1998

As Bill Alfonso (Manager)

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ECW Fan Cam: May 29, 1999

As Bill Alfonso (Manager)

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ECW Fan Cam: October 15, 1999

As Bill Alfonso (Manager)

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ECW Fan Cam: January 30, 1999

As Bill Alfonso (Manager)

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ECW Fan Cam: February 6, 1999

As Bill Alfonso (Manager)

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ECW Fan Cam: December 17, 1999

As Bill Alfonso (Manager)

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ECW Fan Cam: January 27, 2000

As Bill Alfonso

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ECW Fan Cam: October 23, 1999

As Bill Alfonso (Manager)

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ECW Fan Cam: June 3, 2000

As Bill Alfonso (Manager)

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ECW Fan Cam: August 25, 2000

As Bill Alfonso (Manager)

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ECW Fan Cam: September 9, 2000

As Bill Alfonso (Manager)

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ECW Heat Wave 2000

As Bill Alfonso (Manager)

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ECW: January 27, 1996

As Bill Alfonso (Appearance)

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ECW Living Dangerously 2000

As Bill Alfonso (Appearance)

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ECW Barbed Wire, Hoodies and Chokeslams

As Bill Alfonso (State Appointed Referee)

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ECW Enter The Sandman

As Bill Alfonso (Troubleshooting Referee)

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ECW Hardcore Heaven 1995

As Bill Alfonso (Troubleshooting Referee)

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ECW Heat Wave 1995

As Bill Alfonso (Troubleshooting Referee)

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ECW Gangsta's Paradise

As Bill Alfonso (Troubleshooting Referee)

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ECW Sunshine State Slaughter

As Bill Alfonso (Troubleshooting Referee)

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The Best of Shane Douglas

As Bill Alfonso (Manager)

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ECW Path of Destruction

As Bill Alfonso (Manager)

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The Best of The Eliminators

As Bill Alfonso (Manager)

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WWE Bloopers Bleeps and Bodyslams

As Bill Alfonso

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WWE: Blood Sport ECW - The Most Violent Matches

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Barbed Wire City: The Unauthorized Story of Extreme Championship Wrestling

As Himself

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ECW Fan Cam: March 7, 1998

As Bill Alfonso (Manager)

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ECW Fan Cam: September 23, 1995

As Bill Alfonso (Referee)

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ECW Fan Cam: May 10, 1996

As Bill Alfonso (Manager)

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ECW Fan Cam: July 28, 1996

As Bill Alfonso

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ECW Fan Cam: February 14, 1997

As Bill Alfonso (Manager)

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ECW Fan Cam: March 22, 1997

As Bill Alfonso (Manager)

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Hardcore Homecoming

As Bill Alfonso (Manager)

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ECW: The Best of Cactus Jack

As Bill Alfonso

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ECW: Bloodsport The Most Violent Matches

As Bill Alfonso

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ECW The Doctor is In

As Bill Alfonso

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ECW Anarchy Rulz 2000

As Bill Alfonso (Manager)

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ECW Crossing The Line 1999

As Bill Alfonso

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ECW Massacre on Queens Boulevard

As Bill Alfonso (Manager)

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ECW November to Remember 1996

As Bill Alfonso

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ECW House Party 1999

As Bill Alfonso

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MLW War Games

As Bill Alfonso

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WWE: Undertaker 20-0 - The Streak

As Bill Alfonso - Referee (archive footage)

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MLW Rise of The Renegades

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WrestleCade Supershow 2019

As Bill Alfonso

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MECW Inaugural Show

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ECW November to Remember 1995

As Bill Alfonso

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ECW Wrestlepalooza 1998

As Bill Alfonso

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ECW Holiday Hell '95: The New York Invasion

As Bill Alfonso (Manager)

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ECW A Matter of Respect 1998

As Bill Alfonso (Manager)

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ECW It Ain't Seinfeld

As Bill Alfonso (Manager)

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ECW House Party 1996

As Bill Alfonso (Manager)

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ECW CyberSlam 1996

As Bill Alfonso

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ECW Just Another Night

As Bill Alfonso

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ECW Big Apple Blizzard Blast

As Bill Alfonso

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ECW Big Ass Extreme Bash

As Bill Alfonso

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ECW Hostile City Showdown 1996

As Bill Alfonso

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ECW A Matter of Respect

As Bill Alfonso (Manager)

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ECW Hardcore Heaven 1996

As Bill Alfonso

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ECW Natural Born Killaz

As Bill Alfonso (Manager)

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ECW When Worlds Collide 1996

As Bill Alfonso

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ECW Heat Wave 1998

As Bill Alfonso

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ECW Ultimate Jeopardy 1996

As Bill Alfonso

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ECW High Incident

As Bill Alfonso (Manager)

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ECW Holiday Hell 1996

As Bill Alfonso

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ECW Barely Legal 1997

As Bill Alfonso (Manager)

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ECW Guilty as Charged 1999

As Bill Alfonso

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ECW November To Remember 1998

As Bill Alfonso (Manager)

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ECW Wrestlepalooza 1997

As Bill Alfonso (Manager)

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ECW Born To Be Wired

As Bill Alfonso

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ECW As Good As It Gets

As Bill Alfonso

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ECW Hardcore Heaven 1997

As Bill Alfonso (Manager)

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ECW November To Remember 1997

As Bill Alfonso

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ECW House Party 1998

As Bill Alfonso

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ECW Mountain Top Madness

As Bill Alfonso

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ECW CyberSlam 1998

As Bill Alfonso (Manager)

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ECW Living Dangerously 1998

As Bill Alfonso

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ECW Living Dangerously 1999

As Bill Alfonso (Manager)

actor

ECW Hardcore Heaven 1999

As Bill Alfonso (Manager)

actor

ECW Anarchy Rulz 1999

As Bill Alfonso (Manager)

actor

ECW CyberSlam 1999

As Bill Alfonso (Manager)

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ECW November to Remember 1999

As Bill Alfonso (Manager)

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ECW Heat Wave 1999

As Bill Alfonso

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WWE Raw

As Bill Alfonso

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WWF Wrestling Challenge

As Bill Alfonzo