Raiders left tackle Donald Penn will have season-ending foot surgery on Thursday, Ian Rapoport of NFL.com (on Twitter) hears. The Raiders will place Penn on injured reserve, ruling him out for the final two games of the season. 
The injury means that Penn will miss his first game since 2007. Although things did not work out as planned for the 6-8 Raiders this year, it was a decent season for Penn on a personal level. He currently ranks as Pro Football Focus’ No. 23 ranked tackle, placing him ahead of guys like Russell Okung and Alejandro Villanueva. Last year, he finished No. 12 amongst all tackles in the NFL, per PFF.
Penn had some offseason contract drama with the Raiders, but the two sides smoothed things out in time for the start of the season. In September, they agreed to a two-year, $21MM extension that could keep him in place through 2019. The new deal calls for a $8.35MM cap number in 2018 ($3MM guarantee) and a $10.35MM cap figure in ’19 (non-guaranteed).
The Raiders fell to 6-8 with their loss to Dallas on Sunday. They can still finish with a .500 record if they are able to beat the Eagles and Chargers in their final two games.