Whitney Mercilus ended up seeing time in three games with the Packers, collecting five tackles and one sack. Mark J. Rebilas-USA TODAY Sports

Whitney Mercilus signed with the Packers less than a month ago, but the pass rusher is now done for the season. ESPN’s Adam Schefter reports (via Twitter) that the veteran linebacker suffered a season-ending biceps tear.

The veteran was signed to help fill in for Za’Darius Smith, who remains sidelined with a back injury. Mercilus ended up seeing time in three games with his new squad, collecting five tackles and one sack. Before suffering the injury Sunday against the Seahawks, Mercilus had appeared in at least 40 percent of Green Bay’s defensive snaps through his first three games with the organization.

Mercilus was cut by the Texans back in October after seeing his role reduced on defense. The 31-year-old still put up solid numbers despite the part-time role in Houston, compiling 12 tackles, three sacks, four tackles for loss and three QB hits. The defender had spent his entire nine-plus-year career in Houston, starting 102 of his 132 games. He ranks second in franchise history (behind J.J. Watt) in a number of statistics, including sacks (57), forced fumbles (13), tackles for loss (72), and QB hits (115).

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