Pierce and the Ravens agreed to a two-year, $7.5 million extension Saturday, Field Yates of ESPN reports.
Pierce (neck) was not listed on Baltimore's injury report Tuesday.
Pierce (neck) is considered questionable to return to Sunday's game against the Dolphins due to a stinger.
Pierce had five tackles (four solo) including a sack and a forced fumble in Sunday's 31-24 win over the Cardinals.
Pierce (biceps), who finished last year on IR, has been spotted working out during Ravens' voluntary OTAs, Jonathan Alfano of Sports Illustrated reports.
The Ravens placed Pierce (biceps) on injured reserve Thursday.
Pierce (biceps) is undergoing season-ending surgery Thursday, Jamison Hensley of ESPN.com reports.
Pierce (biceps) is debating whether to have season-ending surgery, or to rehab and play through the injury according to head coach John Harbaugh, Jeff Zrebiec of The Athletic reports.
Pierce suffered a biceps tear in Sunday's win over the Patriots, Ian Rapoport of NFL Network reports.
Pierce (arm) has been ruled out for the remainder of Sunday's game against the Patriots, Jeff Zrebiec of The Athletic reports.