New Minnesota Vikings quarterback Brett Favre Brett Favre (4) and and teammate Tarvaris Jackson (7) look on during NFL football training camp, Tuesday, Aug. 18, 2009 in Eden Prairie, Minn...

Flying tackle

Colts defensive back Jamie Silva (40) dives to sack Vikings quarterback Tarvaris Jackson during the Colts-Vikings preseason game. Also, check out our new ESPN Arcade version of Freeze...

High-flying tackle

...Indianapolis, IN, USA; Indianapolis Colts defensive back Jamie Silva (40) dives to sack Minnesota Vikings quarterback Tarvaris Jackson (7) at Lucas Oil Stadium

Minnesota Vikings quarterback Tarvaris Jackson, who was injured last week, watches afternoon practice as he exercises his injured left knee during...

Minnesota Vikings quarterback Tarvaris Jackson during NFL football training camp Friday, July 31, 2009 in Mankato, Minn. (AP Photo/Jim Mone...

Minnesota Vikings quarterbacks Sage Rosenfels, right, and Tarvaris Jackson, center, watch as John David Booty rolls out in the first day of drills during NFL...

Minnesota Vikings quarterback Tarvaris Jackson during NFL football training camp Friday, July 31, 2009 in Mankato, Minn. (AP Photo/Jim Mone...

Minnesota Vikings quarterback Tarvaris Jackson during NFL football training camp Friday, July 31, 2009 in Mankato, Minn. (AP Photo/Jim Mone...

Dec 28, 2008; Minneapolis, MN, USA: Minnesota Vikings quarterback Tarvaris Jackson (7) throws against the New York Giants in the second quarter at the Metrodome. Mandatory credit...

Minnesota Vikings quarterback Tarvaris Jackson, right, watches as fellow quarterback Sage Rosenfels throws during mini-camp Thursday, June 11, 2009 in...

Dec 07, 2008; Glendale, AZ, USA; Minnesota Vikings quarterback Tarvaris Jackson (7) is brought down from behind by Arizona Cardinals defensive tackle Darnell Dockett (90) in the...

...in East Rutherford, New Jersey. (Photo by Al Bello/Getty Images) GLENDALE, AZ - DECEMBER 14: Quarterback Tarvaris Jackson #7 of the Minnesota Vikings drops back to pass during the first quarter against the Arizona...

...May 31, 2009 at Winter Park in Eden Prairie, Minnesota. (Photo by Tom Dahlin/Getty Images) Tarvaris Jackson during the Minnesota Vikings Optional Training Activities on Thursday, June 4, 2009 at the Vikings training...

Dec. 14, 2008; Glendale, AZ, USA; Minnesota Vikings quarterback Tarvaris Jackson (7) looks for a receiver against the Arizona Cardinals at University of Phoenix Stadium. Mandatory Credit...

...of Phoenix Stadium in Glendale, Arizona. 2- Dec 07, 2008; Glendale, AZ, USA; Minnesota Vikings quarterback Tarvaris Jackson (7) is brought down from behind by Arizona Cardinals defensive tackle Darnell Dockett (90) in the...