Firkser left practice early Wednesday, likely due to an unspecified injury, John Glennon of BroadwaySportsMedia.com reports.
The tight end may be banged up on the heels of a quiet Week 1 in which he produced three receptions for 19 yards on four targets. Firkser played only 48 percent of offensive snaps, despite being the primary pass-catching tight end for a team that was trailing the Cardinals for multiple scores all afternoon. An absence for Week 2 against Seattle would leave more work for fellow tight ends Geoff Swaim and MyCole Pruitt, though both are blockers more so than pass-catching threats.