Vikings promote RB Caleb King, TE Mickey Shuler from practice squad
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Peterson tore the anterior cruciate ligament and the medial collateral ligament in his left knee on a hit from Redskins safety DeJon Gomes in the third quarter of the Vikings' victory on Saturday at Washington.
King, who played college football at Georgia, was signed by the Vikings in late August after not being selected in the supplemental draft. King entered that draft after being ruled academically ineligible in early July.
King, who rushed for 430 yards on 80 carries with two touchdowns as a junior at Georgia in 2010, had spent this season on the Vikings practice squad after being cut in early September.
Shuler was signed to the Vikings practice squad in late November, beginning his second stint with the franchise.
He was drafted in the seventh round in 2010 out of Penn State by the Vikings and opened that season on the 53-man roster. However, the Vikings tried to get him through waivers on Sept. 22 and he ended up being claimed by Miami.
Shuler was claimed off waivers by Cincinnati this past September but did not pass his physical. He signed a two-year deal, an NFL source said.
Reisner, a rookie free agent from Iowa, has been active for six games this season with the Vikings and also spent time on the practice squad.
He had one reception for 5 yards this season. Reisner was inactive for Saturday's game at Washington.