Douglas caught two of three targets for 15 yards during Sunday's 29-26 win over Buffalo.
The Steelers signed Murphy-Bunting off the Buccaneers' practice squad Monday, Teresa Varley of the Steelers' official site reports.
The Steelers placed Harmon (foot) on injured reserve Monday, Teresa Varley of the team's official site reports.
Head coach Mike McCarthy said that Dowdle (toe) had a positive workout Friday and is "making progress" in his recovery, but the Steelers aren't yet certain if he'll be available to play Week 5 versus the Colts, Nick Farabaugh of PennLive.com reports.
Henry finished with five receptions for 62 yards on five targets in Sunday's 29-26 win over the Bills.
Head coach Mike Vrabel said that he expects to know more about Hollins' calf injury later Monday, and the Patriots are uncertain if the wideout will be able to practice "for a couple days," Phil Perry of NBC Sports Boston reports.
Borregales did not attempt a field and made all three of his extra-point tries during Sunday's 29-26 win over Buffalo.
Chism caught two of four targets for 42 yards and a touchdown in the Patriots' 29-26 win over the Bills on Sunday.
Henderson rushed 14 times for 42 yards and failed to bring in either of his two targets in the Patriots' 29-26 win over the Bills on Sunday.