Ricky Williams | Career in pictures

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  Ricky Williams gets past Bills safety Billy Jenkins for TD run in the first quarter on Dec. 1, 2002. JOE RIMKUS JR/MIAMI HERALD STAFF / MHS

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  Ricky Williams, left, and Percy Miller, aka Master P, meet the media Sunday, April 18, 1999 at the New Orleans Saints camp in Kenner, La., a suburb of New Orleans. Williams, the Heisman Trophy winner drafted by the Saints, is represented by No Limit Sports founded by Master P. JUDI BOTTONI / STRINGER

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  New Orleans Saints running back Ricky Williams races upfield past the defense of the Carolina Panthers' Sean Gilbert during the third quarter Nov. 12, 2000. PATRICK SCHNEIDER / STAFF

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  Jim Brown and Ricky Williams appear at a press conference at the James E. Scott Community Association F.L.O.Y.D. House in Miami on Oct. 3, 2003. JOE RIMKUS JR/MIAMI HERALD STAFF / MIAMI HERALD STAFF

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  In this photo released by CBS' "60 Minutes," on Thursday, Dec. 16, 2004, former Miami Dolphins superstar running back Ricky Williams, right, with Mike Wallace in Grass Valley, Calif. on Monday, Dec. 13, 2004, in his first television interview since retiring from the NFL. Williams, 27, has decided to study holistic medicine at the California College of Ayurveda in Grass Valley. The interview, in which he disusses his decision to retire, will be broadcast on "60 Minutes," Sunday, Dec. 19 (7:00-8:00 PM, ET/PT) on the CBS Television Network. (AP Photo/CBS NEWS/60 Minutes) JOE RIMKUS JR. / MIAMI HERALD STAFF

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  Aug. 23,2008; Miami, FL, USA; Miami Dolphins running back Ricky Williams (34) before a preseason game against the Kansas City Chiefs at Dolphin Stadium. Mandatory Credit: Steve Mitchell-US PRESSWIRE STEVE MITCHELL-US PRESSWIRE / CONTRACT PHOTOGRAPHER

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  ** FILE ** Toronto Argonauts' Ricky Williams smiles as he sits on the bench during pre-season Canadian Football League action against the Hamilton Tiger-Cats in Toronto, Canada, in this June 2, 2006, file photo. (AP Photo/CP, Adrian Wyld) ADRIAN WYLD / MBR

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  Photo by Ricky Williams - Miami Dolphins' Ricky Williams poses in this self-portrait with this 1974 VW van that he bought and used while in vacationing during in the offseason in Australia. CHARLES TRAINOR JR / MHS

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  Ricky Williams is introduced by Dolphins coach Dave Wannstedt on March 11, 2002 after the running back was acquired from the Saints in a trade. BOB EIGHMIE/HERALD STAFF

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  Ricky Williams

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  Pittsburgh Steelers' James Farrior, top, and Ike Taylor, left, stop Miami Dolphins running back Ricky Williams (34) after a short gain in during second quarter NFL football action in Pittsburgh, Monday, Nov. 26, 2007. (AP Photo/Gene J. Puskar) JOE RIMKUS JR. / MIAMI HERALD STAFF

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  Miami Dolphins' running backs Ricky Williams and Ronnie Brown are happy as they leave the field after overtime win over the Green Bay Packers.Lambeau Field on October 17.2010. JOE RIMKUS JR. / STAFF PHOTO

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  Texas coach Mack Brown hugs former player Ricky Williams prior to their game against Alabama in the BCS National Championship game at the Rose Bowl in Pasadena, California on Thursday, January 7, 2010. (Michael Ainsworth/Dallas Morning News/MCT) MICHAEL AINSWORTH / MBR

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  The Miami Dolphins' running back Ricky Williams is congratulated by offensive lineman Jake Long after his long fourth quarter touchdown in the game with the Oakland Raiders.Oakland-Alameda Coliseum in Oakland California on November 28,2010. JOE RIMKUS JR. / MIAMI HERALD STAFF

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  121210 (Allen Eyestone/The Palm Beach Post) EAST RUTHERFORD, FL..The New Meadowlands Stadium..Miami Dolphins vs New York Jets..Miami Dolphins running back Ricky Williams (34) looks for room to run as Jets (31) Antonio Cromartie moves in for the tackle. ALLEN EYESTONE / STAFF PHOTOGRAPHER

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  Miami Dolphins running back Ricky Williams cradles a football before an NFL football game against the Green Bay Packers, Sunday, Oct. 17, 2010, in Green Bay, Wis. (AP Photo/Jeffrey Phelps) JEFFREY PHELPS / FRE

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  Miami Dolphins running back Ricky Williams signs an autograph for Teakahla Whitecloud of Fort Lauderdale during a program in South Florida that honored youngsters from around the nation as Animal Heroes. PATTI ROTH

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  The Miami Dolphins' running back Ricky Williams is all smiles after his fourth quarter long touchdown run in the game with the Oakland Raiders.Oakland-Alameda Coliseum in Oakland California on November 28,2010. JOE RIMKUS JR. / MIAMI HERALD STAFF

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  Ricky Williams races for a 51-yard touchdown in the second quarter against the Seattle Seahawks at Sun Life Stadium in Miami on Nov. 9, 2008. JEFFREY BOAN / STAFF

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  Miami Dolphins' running back Ricky Williams runs in the third quarter in a game against the Green Bay Packers.Lambeau Field on October 17.2010. JOE RIMKUS JR/MIAMI HERALD STAFF / MIAMI HERALD STAFF

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  Miami Dolphins running back Ricky Williams tosses the football after scoring in the second guarter against the New England Patriots at Gillette Stadium in Foxborough, Mass., on Nov. 8, 2009. JOE RIMKUS JR. / STAFF PHOTO

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  Miami Dolphins running back Ricky Williams runs in the third quarter against the Green Bay Packers at Lambeau Field on Oct. 17, 2010. Joe Rimkus Jr. / Staff Photo

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  Running backs Ricky Williams, left, and Lex Hillard are shown during practice at Miami Dolphins training camp Friday morning, Aug. 14, 2009 at the team's training facility at Nova Southeastern University in Davie. CHARLES TRAINOR JR. / STAFF PHOTO