Vikings RB Peterson leaves with ankle injury

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Minnesota Vikings running back Adrian Peterson went down Sunday with an apparent ankle injury against the Baltimore Ravens and was carted off the field.

The injury happened early in the second quarter, when Peterson caught a swing pass from Matt Cassel in the flat. After Peterson was tackled near the sideline by Ravens rookie linebacker Arthur Brown, Peterson fumbled the ball out of bounds and immediately fell to the snowy ground in writhing pain.

Minnesota Vikings running back Adrian Peterson (28) is tackled by Baltimore Ravens inside linebackers Jameel McClain, left, and Daryl Smith as he rushes the ball in the first half of an NFL football game, Sunday, Dec. 8, 2013, in Baltimore. (AP Photo/Nick Wass)
Minnesota Vikings running back Adrian Peterson (28) is tackled by Baltimore Ravens inside linebackers Jameel McClain, left, and Daryl Smith as he rushes the ball in the first half of an NFL football game, Sunday, Dec. 8, 2013, in Baltimore
Minnesota Vikings running back Adrian Peterson (28) is tackled by Baltimore Ravens inside linebackers Jameel McClain, left, and Daryl Smith as he rushes the ball in the first half of an NFL football game, Sunday, Dec. 8, 2013, in Baltimore. (AP Photo/Nick Wass)
BALTIMORE, MD - DECEMBER 08: Running back Adrian Peterson #28 of the Minnesota Vikings is taken off the field after being injured during the second quarter of the game against the Baltimore Ravens at M&T Bank Stadium on December 8, 2013 in Baltimore, Maryland. (Photo by Larry French/Getty Images)
Minnesota Vikings v Baltimore Ravens
BALTIMORE, MD - DECEMBER 08: Running back Adrian Peterson #28 of the Minnesota Vikings is taken off the field after being injured during the second quarter of the game against the Baltimore Ravens at M&T Bank Stadium on December 8, 2013 in Baltimore, Maryland. (Photo by Larry French/Getty Images)
BALTIMORE, MD - DECEMBER 08: Running back Adrian Peterson #28 of the Minnesota is taken off the field after being injured during the game against the Baltimore Ravens at M&T Bank Stadium on December 8, 2013 in Baltimore, Maryland. (Photo by Larry French/Getty Images)
Minnesota Vikings v Baltimore Ravens
BALTIMORE, MD - DECEMBER 08: Running back Adrian Peterson #28 of the Minnesota is taken off the field after being injured during the game against the Baltimore Ravens at M&T Bank Stadium on December 8, 2013 in Baltimore, Maryland. (Photo by Larry French/Getty Images)
BALTIMORE, MD - DECEMBER 08: Running back Adrian Peterson #28 of the Minnesota Vikings is taken off the field after being injured during the second quarter of the game against the Baltimore Ravens at M&T Bank Stadium on December 8, 2013 in Baltimore, Maryland. (Photo by Larry French/Getty Images)
Minnesota Vikings v Baltimore Ravens
BALTIMORE, MD - DECEMBER 08: Running back Adrian Peterson #28 of the Minnesota Vikings is taken off the field after being injured during the second quarter of the game against the Baltimore Ravens at M&T Bank Stadium on December 8, 2013 in Baltimore, Maryland. (Photo by Larry French/Getty Images)
BALTIMORE, MD - DECEMBER 08: Running back Adrian Peterson #28 of the Minnesota Vikings is taken off the field after being injured during the second quarter of the game against the Baltimore Ravens at M&T Bank Stadium on December 8, 2013 in Baltimore, Maryland. (Photo by Larry French/Getty Images)
Minnesota Vikings v Baltimore Ravens
BALTIMORE, MD - DECEMBER 08: Running back Adrian Peterson #28 of the Minnesota Vikings is taken off the field after being injured during the second quarter of the game against the Baltimore Ravens at M&T Bank Stadium on December 8, 2013 in Baltimore, Maryland. (Photo by Larry French/Getty Images)
BALTIMORE, MD - DECEMBER 08: Running back Adrian Peterson #28 of the Minnesota is taken off the field after being injured during the game against the Baltimore Ravens at M&T Bank Stadium on December 8, 2013 in Baltimore, Maryland. (Photo by Larry French/Getty Images)
Minnesota Vikings v Baltimore Ravens
BALTIMORE, MD - DECEMBER 08: Running back Adrian Peterson #28 of the Minnesota is taken off the field after being injured during the game against the Baltimore Ravens at M&T Bank Stadium on December 8, 2013 in Baltimore, Maryland. (Photo by Larry French/Getty Images)
BALTIMORE, MD - DECEMBER 08: Running back Adrian Peterson #28 of the Minnesota Vikings is taken off the field after being injured during the second quarter of the game against the Baltimore Ravens at M&T Bank Stadium on December 8, 2013 in Baltimore, Maryland. (Photo by Larry French/Getty Images)
Minnesota Vikings v Baltimore Ravens
BALTIMORE, MD - DECEMBER 08: Running back Adrian Peterson #28 of the Minnesota Vikings is taken off the field after being injured during the second quarter of the game against the Baltimore Ravens at M&T Bank Stadium on December 8, 2013 in Baltimore, Maryland. (Photo by Larry French/Getty Images)
BALTIMORE, MD - DECEMBER 08: Running back Adrian Peterson #28 of the Minnesota is taken off the field after being injured during the game against the Baltimore Ravens at M&T Bank Stadium on December 8, 2013 in Baltimore, Maryland. (Photo by Larry French/Getty Images)
Minnesota Vikings v Baltimore Ravens
BALTIMORE, MD - DECEMBER 08: Running back Adrian Peterson #28 of the Minnesota is taken off the field after being injured during the game against the Baltimore Ravens at M&T Bank Stadium on December 8, 2013 in Baltimore, Maryland. (Photo by Larry French/Getty Images)
BALTIMORE, MD - DECEMBER 08: Running back Adrian Peterson #28 of the Minnesota Vikings is taken off the field after being injured during the second quarter of the game against the Baltimore Ravens at M&T Bank Stadium on December 8, 2013 in Baltimore, Maryland. (Photo by Larry French/Getty Images)
Minnesota Vikings v Baltimore Ravens
BALTIMORE, MD - DECEMBER 08: Running back Adrian Peterson #28 of the Minnesota Vikings is taken off the field after being injured during the second quarter of the game against the Baltimore Ravens at M&T Bank Stadium on December 8, 2013 in Baltimore, Maryland. (Photo by Larry French/Getty Images)

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