Baseball

Boston Red Sox -- Placed OF Andy Tomberlin on the 15-day disabled list, retroactive to June 9. Activated P Scott Bankhead from the DL.

Cleveland Indians -- Activated P Jerry DiPoto from the 60-day DL and assigned him to Triple-A Charlotte. Designated P Brian Barnes for assignment.

Florida Marlins -- Activated OF Gary Sheffield from the 15-day DL. Placed P Chris Hammond on the 15-day DL. Announced they will purchase the contract of P Terry Mathews from Triple-A Edmonton on Wednesday.

Football

Pittsburgh Steelers -- Signed C Dermontti Dawson to a contract extension through 1997.

Hamilton Tiger-Cats (CFL) -- Released DT Selwyn Croft.