William Sierra

🎂 11th August 1957 (68 yrs) 📍 Tampa, Florida, USA

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.

Since the closing of ECW, Alfonso has appeared in several independent promotions. He worked one match in Xtreme Pro Wrestling as a referee. He has also worked in Elite Wrestling Entertainment as a referee and a manager,as well as managing wrestlers in Squared Circle Wrestling and Pro Wrestling Unplugged.In May 2007, he made his first appearance with Women's Extreme Wrestling, where he serves as a manager and as commissioner.

On August 8, 2010, Alfonso took part in Total Nonstop Action Wrestling's ECW reunion show, Hardcore Justice, managing both Rob Van Dam and Sabu during their match against each other. On the following edition of TNA Impact!, the ECW alumni, known collectively as Extreme, Version 2.0 (EV 2.0), were assaulted by A.J. Styles, Kazarian, Robert Roode, James Storm, Douglas Williams and Matt Morgan of Ric Flair's Fourtune stable, who thought they didn't deserve to be in TNA.

In October 2002, fellow manager Missy Hyatt sued Alfonso in a case televised on Judge Mathis. She accused Alfonso of damaging her Porsche and was awarded $500.

Alfonso is not the only person in his family to have a career in the Professional Wrestling sport, his step brother, former Olympian Bob Roop also spent many years as a wrestler fighting all over the world under a variety of names and gimmicks while his cousin David Sierra has also enjoyed a long career in the ring including a stint in WCW as Fidel Sierra where he is remembered for a controversial feud with Hacksaw Jim Duggan. However, contrary to popular belief, Alfonso is not related to Mike Awesome with whom he spent time with in ECW. The confusion is thought to have stemmed from the fact that Awesome's real surname was Alfonso and the fact that he wrestled in Japan as The Gladiator, a name that Alfonso's real brother Bob Roop also used during his career.

🎬 Movies Featuring William Sierra

The Ref Didn’t See It!

The Ref Didn’t See It! (2025)

as Bill Alfonso
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Battleground Championship Wrestling Presents ECW Reunion Show: A Tribute To The Extreme 2 (2024)

as Bill Alfonso
The WRLD on GCW

The WRLD on GCW (2022)

as Bill Alfonso
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Battleground Championship Wrestling (2021)

as Bill Alfonso
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WrestleCade Supershow 2019 (2019)

as Bill Alfonso
Barbed Wire City: The Unauthorized Story of Extreme Championship Wrestling

Barbed Wire City: The Unauthorized Story of Extreme Championship Wrestling (2013)

as Himself
WWE: Undertaker 20-0 - The Streak

WWE: Undertaker 20-0 - The Streak (2012)

as Bill Alfonso - Referee (archive footage)
WWE: Blood Sport ECW - The Most Violent Matches

WWE: Blood Sport ECW - The Most Violent Matches (2006)

ECW: Bloodsport The Most Violent Matches

ECW: Bloodsport The Most Violent Matches (2006)

as Bill Alfonso
Hardcore Homecoming

Hardcore Homecoming (2005)

as Bill Alfonso (Manager)
MLW War Games

MLW War Games (2003)

as Bill Alfonso
MLW Rise of The Renegades

MLW Rise of The Renegades (2003)

MLW Hybrid Hell

MLW Hybrid Hell (2003)

as Bill Alfonso (Manager)
WWA The Revolution

WWA The Revolution (2002)

as Bill Alfonso
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ECW: The Best of Cactus Jack (2001)

as Bill Alfonso
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MECW Inaugural Show (2001)

ECW Hardcore History

ECW Hardcore History (2001)

as Bill Alfonso (Referee)
ECW Path of Destruction

ECW Path of Destruction (2000)

as Bill Alfonso (Manager)
ECW Anarchy Rulz 2000

ECW Anarchy Rulz 2000 (2000)

as Bill Alfonso (Manager)
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ECW Fan Cam: September 9, 2000 (2000)

as Bill Alfonso (Manager)
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ECW Fan Cam: August 25, 2000 (2000)

as Bill Alfonso (Manager)
ECW: Extreme Evolution

ECW: Extreme Evolution (2000)

as Bill Alfonso (Manager)
ECW Heat Wave 2000

ECW Heat Wave 2000 (2000)

as Bill Alfonso (Manager)
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ECW Fan Cam: June 3, 2000 (2000)

as Bill Alfonso (Manager)
ECW Living Dangerously 2000

ECW Living Dangerously 2000 (2000)

as Bill Alfonso
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ECW Fan Cam: January 27, 2000 (2000)

as Bill Alfonso
ECW Guilty as Charged 2000

ECW Guilty as Charged 2000 (2000)

as Bill Alfonso (Manager)
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ECW Fan Cam: December 17, 1999 (1999)

as Bill Alfonso (Manager)
ECW November to Remember 1999

ECW November to Remember 1999 (1999)

as Bill Alfonso (Manager)
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ECW Fan Cam: October 23, 1999 (1999)

as Bill Alfonso (Manager)
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ECW Fan Cam: October 15, 1999 (1999)

as Bill Alfonso (Manager)
ECW Anarchy Rulz 1999

ECW Anarchy Rulz 1999 (1999)

as Bill Alfonso (Manager)
ECW Heat Wave 1999

ECW Heat Wave 1999 (1999)

as Bill Alfonso
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ECW Fan Cam: May 29, 1999 (1999)

as Bill Alfonso (Manager)
ECW Hardcore Heaven 1999

ECW Hardcore Heaven 1999 (1999)

as Bill Alfonso (Manager)
ECW CyberSlam 1999

ECW CyberSlam 1999 (1999)

as Bill Alfonso (Manager)
ECW Living Dangerously 1999

ECW Living Dangerously 1999 (1999)

as Bill Alfonso (Manager)
ECW Crossing The Line 1999

ECW Crossing The Line 1999 (1999)

as Bill Alfonso
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ECW Fan Cam: February 6, 1999 (1999)

as Bill Alfonso (Manager)
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ECW Fan Cam: January 30, 1999 (1999)

as Bill Alfonso (Manager)
ECW House Party 1999

ECW House Party 1999 (1999)

as Bill Alfonso
ECW Guilty as Charged 1999

ECW Guilty as Charged 1999 (1999)

as Bill Alfonso
ECW November To Remember 1998

ECW November To Remember 1998 (1998)

as Bill Alfonso (Manager)
No Image

ECW Fan Cam: September 17, 1998 (1998)

as Bill Alfonso (Manager)
ECW Heat Wave 1998

ECW Heat Wave 1998 (1998)

as Bill Alfonso
ECW A Matter of Respect 1998

ECW A Matter of Respect 1998 (1998)

as Bill Alfonso (Manager)
ECW It Ain't Seinfeld

ECW It Ain't Seinfeld (1998)

as Bill Alfonso (Manager)
ECW Wrestlepalooza 1998

ECW Wrestlepalooza 1998 (1998)

as Bill Alfonso
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The Best of Shane Douglas (1998)

as Bill Alfonso (Manager)
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ECW Fan Cam: March 7, 1998 (1998)

as Bill Alfonso (Manager)
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The Best of The Eliminators (1998)

as Bill Alfonso (Manager)
ECW Living Dangerously 1998

ECW Living Dangerously 1998 (1998)

as Bill Alfonso
ECW CyberSlam 1998

ECW CyberSlam 1998 (1998)

as Bill Alfonso (Manager)
ECW House Party 1998

ECW House Party 1998 (1998)

as Bill Alfonso
ECW November to Remember 1997

ECW November to Remember 1997 (1997)

as Bill Alfonso (Manager)
No Image

ECW Fan Cam: October 31, 1997 (1997)

as Bill Alfonso (Manager)
ECW As Good As It Gets

ECW As Good As It Gets (1997)

as Bill Alfonso
ECW Hardcore Heaven 1997

ECW Hardcore Heaven 1997 (1997)

as Bill Alfonso (Manager)
ECW Born To Be Wired

ECW Born To Be Wired (1997)

as Bill Alfonso
No Image

ECW Heat Wave 1997 (1997)

as Bill Alfonso (Manager)
ECW Wrestlepalooza 1997

ECW Wrestlepalooza 1997 (1997)

as Bill Alfonso (Manager)
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ECW Fan Cam: May 16, 1997 (1997)

as Bill Alfonso (Appearance)
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ECW Fan Cam: May 3, 1997 (1997)

as Bill Alfonso (Manager)
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ECW Fan Cam: May 2, 1997 (Barely Legal II) (1997)

as Bill Alfonso (Manager)
ECW Barely Legal 1997

ECW Barely Legal 1997 (1997)

as Bill Alfonso (Manager)
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ECW Fan Cam: April 4, 1997 (1997)

as Bill Alfonso (Manager)
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ECW Fan Cam: March 22, 1997 (1997)

as Bill Alfonso (Manager)
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ECW Fan Cam: February 14, 1997 (1997)

as Bill Alfonso (Manager)
ECW Holiday Hell 1996

ECW Holiday Hell 1996 (1996)

as Bill Alfonso
No Image

ECW Fan Cam: November 23, 1996 (1996)

as Bill Alfonso (Manager)
ECW November to Remember 1996

ECW November to Remember 1996 (1996)

as Bill Alfonso
No Image

ECW High Incident (1996)

as Bill Alfonso (Manager)
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ECW Fan Cam: October 18, 1996 (1996)

as Bill Alfonso (Manager)
ECW Ultimate Jeopardy 1996

ECW Ultimate Jeopardy 1996 (1996)

as Bill Alfonso
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ECW When Worlds Collide 1996 (1996)

as Bill Alfonso
ECW Natural Born Killaz

ECW Natural Born Killaz (1996)

as Bill Alfonso (Manager)
ECW The Doctor Is In 1996

ECW The Doctor Is In 1996 (1996)

as Bill Alfonso
No Image

ECW Fan Cam: July 28, 1996 (1996)

as Bill Alfonso
ECW Hardcore Heaven 1996

ECW Hardcore Heaven 1996 (1996)

as Bill Alfonso
ECW A Matter of Respect 1996

ECW A Matter of Respect 1996 (1996)

as Bill Alfonso (Manager)
No Image

ECW Fan Cam: May 10, 1996 (1996)

as Bill Alfonso (Manager)
ECW Hostile City Showdown 1996

ECW Hostile City Showdown 1996 (1996)

as Bill Alfonso
ECW Massacre on Queens BLVD

ECW Massacre on Queens BLVD (1996)

as Bill Alfonso (Manager)
ECW Big Ass Extreme Bash 1996

ECW Big Ass Extreme Bash 1996 (1996)

as Bill Alfonso
ECW Just Another Night 1996

ECW Just Another Night 1996 (1996)

as Bill Alfonso
ECW CyberSlam 1996

ECW CyberSlam 1996 (1996)

as Bill Alfonso
ECW Big Apple Blizzard Blast

ECW Big Apple Blizzard Blast (1996)

as Bill Alfonso
No Image

ECW: January 27, 1996 (1996)

as Bill Alfonso (Appearance)
ECW Extreme Warfare Vol. 2

ECW Extreme Warfare Vol. 2 (1996)

as Bill Alfonso
ECW House Party 1996

ECW House Party 1996 (1996)

as Bill Alfonso (Manager)
ECW Holiday Hell 1995

ECW Holiday Hell 1995 (1995)

as Bill Alfonso (Manager)
ECW November to Remember 1995

ECW November to Remember 1995 (1995)

as Bill Alfonso
No Image

ECW Fan Cam: September 23, 1995 (1995)

as Bill Alfonso (Referee)
ECW Gangstas Paradise 1995

ECW Gangstas Paradise 1995 (1995)

as Bill Alfonso (Troubleshooting Referee)
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ECW Sunshine State Slaughter (1995)

as Bill Alfonso (Troubleshooting Referee)
ECW Heat Wave 1995

ECW Heat Wave 1995 (1995)

as Bill Alfonso (Troubleshooting Referee)
ECW Hardcore Heaven 1995

ECW Hardcore Heaven 1995 (1995)

as Bill Alfonso (Troubleshooting Referee)
ECW Mountain Top Madness

ECW Mountain Top Madness (1995)

as Bill Alfonso
ECW Barbed Wire, Hoodies and Chokeslams

ECW Barbed Wire, Hoodies and Chokeslams (1995)

as Bill Alfonso (State Appointed Referee)
ECW Enter the Sandman 1995

ECW Enter the Sandman 1995 (1995)

as Bill Alfonso (Troubleshooting Referee)
Bret "Hit Man" Hart

Bret "Hit Man" Hart (1994)

as Bill Alfonso
WWE Bloopers Bleeps and Bodyslams

WWE Bloopers Bleeps and Bodyslams (1994)

as Bill Alfonso
WWE Bashed in the USA

WWE Bashed in the USA (1993)

as Bill Alfonso