Washington Redskins quarterback Doug Williams (17) gets ready to throw the ball during Super Bowl XXII Jan. 31, 1988, at Jack Murphy Stadium in San Diego. The Washington Redskins defeated the Denver Broncos 42–10. (Tony Tomsic via AP)

Washington Redskins quarterback Doug Williams sets to pass against the Chicago Bears in 1987. (AP Photo / Al Messerschmidt)

Washington Redskins quarterback Doug Williams ready for snap in 1988. (AP Photo / Al Messerschmidt)

Washington Redskins quarterback Doug Williams fades back to pass against the Philadelphia Eagles in the First quarter, Sept. 13, 1987. Location unknown. (AP Photo)

Washington Redskins quarterback Doug Williams (17) sets to hand ball off in 1987.(AP Photo / Al Messerschmidt)

Washington Redskins quarterback Doug Williams (17) sets for play in 1987. (AP Photo / Al Messerschmidt)

Washington Redskins running back Timmy Smith (36) takes the handoff from quarterback Doug Williams (17) during the Redskins 27-24 victory over the New Orleans Saints on November 6, 1988 at RFK Stadium in Washington, D.C. (Paul Spinelli via AP)

Washington Redskins quarterback Doug Williams (17) looks to pass the ball during Super bowl XXII Jan. 31, 1988, at Jack Murphy Stadium in San Diego. The Washington Redskins defeated the Denver Broncos 42–10. (Tony Tomsic via AP)

Washington Redskins quarterback Doug Williams (17) sets to pass in 1988. (AP Photo / Al Messerschmidt)

FILE - In this Jan. 31, 1988, file photo, Washington Redskins quarterback Doug Williams prepares to pass during the first quarter of Super Bowl XXII against the Denver Broncos in San Diego. Williams is one of 13 quarterbacks to start in a Super Bowl after not starting the regular season opener for his team. (AP Photo/Elise Amendola, File)

Washington Redskins quarterback Doug Williams sets to pass against the Chicago Bears in 1987. (AP Photo / Al Messerschmidt)

Washington Redskins quarterback Doug Williams sets for play at the line of scrimmage against the Minnesota Vikings in 1987. (Al Messerschmidt via AP)

Washington Redskins quarterback Doug Williams (17) sets to hand ball off in 1987. (AP Photo / Al Messerschmidt)

Washington Redskins quarterback Doug Wiliams (17) scrambles against the Detroit Lions during the second quarter at Washington's RFK Stadium, Nov. 15, 1987. (AP Photo/Ron Edmonds)

Washington Redskins quarterunning backack Doug Williams (17) sets to hand off Dec. 17, 1988 against the Cincinnati Bengals. (Al Messerschmidt via AP)

Washington Redskins Senior Vice President of Player Personnel Doug Williams watches during the NFL football team's rookie minicamp at the Redskins Park in Ashburn, Va., Friday, May 11, 2018. Williams' connection to Grambling and other Historically Black Colleges and Universities could be a boon for the Redskins in finding another source of talent. (AP Photo/Manuel Balce Ceneta)

Washington Redskins quarterback Doug Williams (17) sets up to pass before an NFL game against the St. Louis Cardinals in Washington, D.C., Oct. 19, 1986. The Redskins defeated the Cardinals 28-21. (AP Photo/Damian Strohmeyer)

Washington Redskins quarterback Doug Williams (17) sets for play in 1987. (AP Photo / Al Messerschmidt)

ADVANCE FOR WEEKEND EDITIONS, JAN. 27-28 FILE ** Washington Redskins quarterback Doug Williams, most valuable player of Super Bowl XXII, cheers his team on during third quarter of game with Denver Broncos in San Diego, Ca., in this Jan. 31, 1988 file photo. When Doug Williams became the first black quarterback to start a Super Bowl 19 years ago, he was the object of what is considered No. 1 on the list of all-time wacky Super Bowl questions: "How long have you been a black quarterback?" Race again will be the focus next week, when Tony Dungy and Lovie Smith become the first two black coaches in the game. (AP Photo/Amy Sancetta)

Washington Redskins quarterback Doug Williams (17) gets ready to throw the ball during Super Bowl XXII Jan. 31, 1988, at Jack Murphy Stadium in San Diego. The Washington Redskins defeated the Denver Broncos 42–10. (Tony Tomsic via AP)

Washington Redskins quarterback Doug Williams (17) sets to hand ball off in 1987.(AP Photo / Al Messerschmidt)

Washington Redskins quarterback Doug Williams fades back to pass against the Philadelphia Eagles in the First quarter, Sept. 13, 1987. Location unknown. (AP Photo)

Washington Redskins quarterback Doug Williams ready for snap in 1988. (AP Photo / Al Messerschmidt)

Washington Redskins quarterback Doug Williams sets to pass against the Chicago Bears in 1987. (AP Photo / Al Messerschmidt)

Washington Redskins quarterback Doug Williams (17) sets for play in 1987. (AP Photo / Al Messerschmidt)

Washington Redskins running back Timmy Smith (36) takes the handoff from quarterback Doug Williams (17) during the Redskins 27-24 victory over the New Orleans Saints on November 6, 1988 at RFK Stadium in Washington, D.C. (Paul Spinelli via AP)

Washington Redskins quarterback Doug Williams (17) looks to pass the ball during Super bowl XXII Jan. 31, 1988, at Jack Murphy Stadium in San Diego. The Washington Redskins defeated the Denver Broncos 42–10. (Tony Tomsic via AP)

Washington Redskins quarterback Doug Williams (17) sets to hand ball off in 1987. (AP Photo / Al Messerschmidt)

Washington Redskins quarterback Doug Wiliams (17) scrambles against the Detroit Lions during the second quarter at Washington's RFK Stadium, Nov. 15, 1987. (AP Photo/Ron Edmonds)

FILE - In this Jan. 31, 1988, file photo, Washington Redskins quarterback Doug Williams prepares to pass during the first quarter of Super Bowl XXII against the Denver Broncos in San Diego. Williams is one of 13 quarterbacks to start in a Super Bowl after not starting the regular season opener for his team. (AP Photo/Elise Amendola, File)

Washington Redskins quarterback Doug Williams sets to pass against the Chicago Bears in 1987. (AP Photo / Al Messerschmidt)

Washington Redskins quarterback Doug Williams (17) sets to pass in 1988. (AP Photo / Al Messerschmidt)

Washington Redskins quarterback Doug Williams sets for play at the line of scrimmage against the Minnesota Vikings in 1987. (Al Messerschmidt via AP)

Washington Redskins Senior Vice President of Player Personnel Doug Williams watches during the NFL football team's rookie minicamp at the Redskins Park in Ashburn, Va., Friday, May 11, 2018. Williams' connection to Grambling and other Historically Black Colleges and Universities could be a boon for the Redskins in finding another source of talent. (AP Photo/Manuel Balce Ceneta)

Washington Redskins quarterunning backack Doug Williams (17) sets to hand off Dec. 17, 1988 against the Cincinnati Bengals. (Al Messerschmidt via AP)

Washington Redskins quarterback Doug Williams (17) sets up to pass before an NFL game against the St. Louis Cardinals in Washington, D.C., Oct. 19, 1986. The Redskins defeated the Cardinals 28-21. (AP Photo/Damian Strohmeyer)

Washington Redskins quarterback Doug Williams (17) sets for play in 1987. (AP Photo / Al Messerschmidt)

ADVANCE FOR WEEKEND EDITIONS, JAN. 27-28 FILE ** Washington Redskins quarterback Doug Williams, most valuable player of Super Bowl XXII, cheers his team on during third quarter of game with Denver Broncos in San Diego, Ca., in this Jan. 31, 1988 file photo. When Doug Williams became the first black quarterback to start a Super Bowl 19 years ago, he was the object of what is considered No. 1 on the list of all-time wacky Super Bowl questions: "How long have you been a black quarterback?" Race again will be the focus next week, when Tony Dungy and Lovie Smith become the first two black coaches in the game. (AP Photo/Amy Sancetta)