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Jim Plunkett through the years

Oakland Raiders' quarterback Jim Plunkett smiles broadly as he shows off his Most Valuable Player trophy after being named as the top competitor in Super Bowl XV in New Orleans against the Philadelphia Eagles, Jan. 25, 1981. (AP Photo)

San Francisco 49ers vs. Los Angles Raiders at Candlestick Park Saturday, August 4, 1984. Pre-season Game. Los Angles Raiders Quarterback Jim Plunkett (16). (AP Photo/Al Golub)

Oakland Raiders quarterback Jim Plunkett (16) drops back to pass in Super Bowl XV resulting in a 27 to 10 Oakland Raiders victory over the Philadelphia Eagles on January 25, 1981 at the Superdome in New Orleans, Louisana. (NFL Photos/AP Photo)

Los Angeles Raiders quarterback Jim Plunkett prepares to pass under pressure as Washington Redskins Dave Butz closes in during first quarter action, Sunday, Jan. 22, 1984 in Tampa Stadium in Super Bowl XVIII. Holding off Butz is raiders Steve Sylvester. (AP Photo)

Oakland Raiders vs Dallas Cowboys at Oakland-Alameda County Coliseum Sunday, December 7, 1980. L-R Guard Henry Lawrence (70) , Guard Gene Upshaw (63), Tackle Art Shell (78), Quarterback Jim Plunkett (16) and Tight End Raymond Chester (88). Raiders lost to the Cowboys 13 -19, but they did will the Superbowl in post season. (AP Photo/Al Golub)

Oakland Raiders' quarterback Jim Plunkett (16) seen in action getting set to throw the ball down field in a game against the San Diego Chargers, 1981. (AP Photo)

Jim Plunkett, right, keeps his hands warm in a pouch on his jersey while conferring with Raiders head coach Tom Flores, left, with only a few seconds left in the first half of AFC playoff game Sunday, Jan. 4, 1981 in Cleveland. Plunkett went back into the game and threw a touchdown pass to Raiders running back Mark van Eeghen. (AP Photo/Brian Horton)

Oakland Raiders quarterback Jim Plunkett, left, hugs Raiders safety Mike Davis after Davis' interception of pass from Cleveland Browns quarterback Brian Sipe in the end zone broke up a scoring threat by the Browns with only a few seconds left in AFC playoff game on Sunday, Jan. 4, 1981 in Cleveland. (AP Photo)

Quarterback Jim Plunkett of Stanford, a hero in Rose Bowl upset victory over Ohio State, sprints through the Buckeye defense for a 22-yard gain to midfield on Jan. 2, 1971 in Pasadena, California. Beyond Stanford's Mike Lasater, on his knees, is Ohio State's, Mike Sensibaugh. Two fourth-quarter touchdowns gave Standford a 27-17 win. (AP Photo)

LOS ANGELES - DECEMBER 18: Quarterback Jim Plunkett #16 of the Los Angeles Raiders throws a pass as he gets pressured by defensive tackle Mike Fanning #79 of the Los Angeles Rams at the Los Angeles Coliseum on December 18, 1982 in Los Angeles, California. The Raiders defeated the Rams 37-31. (AP Photo/NFL Photos)

Los Angeles Raiders quarterback Jim Plunkett (16) directs traffic during the AFC Divisional Playoff, a 17-14 loss to the New York Jets on January 15, 1983, at the Los Angeles Memorial Coliseum in Los Angeles, California. 1982 AFC Divisional Playoff Game - New York Jets vs Los Angeles Raiders - January 15, 1983 (AP Photo/NFL Photos)

Los Angeles Raiders quarterback Jim Plunkett (16) sets up to throw a pass during the Raiders 27-14 victory over the Cleveland Browns on November 16, 1986 at the Los Angeles Memorial Coliseum in Los Angeles, California. (AP Photo/NFL Photos)

San Francisco 49ers quarterback Jim Plunkett (16) fires a pass during a 16-0 victory over the Los Angeles Rams on October 11, 1976, at the Los Angeles Memorial Coliseum in Los Angeles, California. Jim Plunkett - San Francisco 49ers - File Photos (AP Photo/NFL Photos)

New England Patriots quarterback Jim Plunkett (16) barks signals circa the early-1970s. Jim Plunkett - New England Patriots - File Photos (AP Photo/NFL Photos)

Quarterback Jim Plunkett of the New England Patriots drops back to pass. (AP Photo/NFL Photos)

Jim Plunkett, Stanford University quarterback, looks at the Heisman Trophy he won Nov. 24, 1970 in New York. Plunkett won the trophy as college football�s outstanding player of 1970. (AP Photo/Harry Harris

Stanford quarterback Jim Plunkett (16) drops back to throw a pass during their game against Arkansas in Little Rock, Ark., Sept. 14, 1970. Charging into the backfield is Arkansas defensive end Bruce James (85). The Indians defeated the Razorbacks, 34-28. (AP Photo)