After losing three of their last four games, the Texans are stumbling into the playoffs and now they'll have to play without another one of their starting linebackers in the postseason.
Sharpton started the season on the PUP list due to a quad injury, before coming back in Week 11. He played in seven games and started five, with 28 tackles, 2 pass deflections and 1 interception.
Sharpton, a third-year inside linebacker from Miami, helped fill the void created by Brian Cushing's season-ending injury.
His injury leaves the Texans dangerously thin at the linebacker position. Tim Dobbins is the next player in line to start, but he injured his shoulder against the Colts and it's unclear how much he'll be able to play this week.
Houston re-signed Mister Alexander, who had played six games with them earlier in the season, to fill Sharpton's spot on the roster.