After Sanchez's stint in NY, he bounced around, serving as the backup for Philadelphia, Dallas, Denver, and Chicago at times.
While there are similarities between Smith's injury and the infamous Joe Theismann injury when he was sacked by Lawrence Taylor in 1985, there are some differences.
Redskins head coach Jay Gruden said that familiarity was part of the team's decision to go with Sanchez. Redskins offensive coordinator Matt Cavanaugh spent four seasons as Sanchez's QB coach in NY (2009-12).More news: A Huge Build Reported In EIA Crude Oil Stocks
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The NFC East just got a little bit murkier.
In nine games, Smith has gone 193-of-301 for 2045 passing yards, 10 touchdowns and three interceptions.
Redskins quarterback and former Kansas City Chiefs quarterback Alex Smith's season is over. His first start will come Thursday in Dallas, with first-place on the line. One of those turnovers became known as the "Butt Fumble", a play in which Sanchez lost the ball when he slammed into a lineman's backside.
Also, Sanchez hasn't been on an National Football League roster this entire season.
Washington will be playing on Thanksgiving, in the 4:30 p.m ET kickoff against the Dallas Cowboys.