Sidney Crosby injury timeline

Pittsburgh star Sidney Crosby has been diagnosed with a concussion and is ruled out of Game 4 of the Penguins' Eastern Conference semifinal with Washington on Wednesday. He has battled concussions and other injuries throughout his career. A brief look at Crosby's injury history, as compiled by The Canadian Press:

Jan. 18, 2008-Crosby suffers a high ankle sprain in a 3-0 home loss to Tampa Bay and misses the next 21 games. He returns briefly for three games on March 4 before missing seven more games.

Jan. 1, 2011-Crosby is hit in the head by Washington's David Steckel during the Winter Classic, and is hit again in Pittsburgh's next game by Tampa Bay defenseman Victor Hedman. He misses the rest of the 2010-11 season and playoffs and the first 20 games of the 2011-12 season with concussion symptoms.

Dec. 5, 2011-After only eight games back from his concussion, Crosby collides with Boston's David Krejci. He misses the next 40 games with concussion symptoms and a neck injury.

March 30, 2013-Crosby misses the final 12 games of the regular season after his jaw is broken from a slapshot by teammate Brooks Orpik in a game against the New York Islanders.

Dec. 12, 2014-Crosby is diagnosed with the mumps and misses three games.

Oct., 10 2016-Crosby is diagnosed with a concussion and misses the first six games of the 2016-17 season.

May 1, 2017-Crosby suffers a concussion after being cross-checked in the head by Washington defenseman Matt Niskanen in Game 3 of an Eastern Conference semifinal.

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More AP NHL: apnews.com/tag/NHLhockey

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