In San Antonio, the Gunslingers (3-10) were beaten by a last-half rally by Western-Conference leading Oakland.
Gunslingers Coach Jim Bates resigned yesterday afternoon for "personal reasons," leaving former head coach Gil Steinke, the team's vice president for football operations, to fill in for him during the game.
Fred Besana replaced starting quarterback Bobby Hebert with about 10 minutes left in the game and the Invaders (9-3-1) trailing, 21-17. He led Oakland to an 11-play, 43-yard scoring drive, ending with a three-yard scoring pass to Mike Shumann with less than three minutes left.
San Antonio quarterback Rick Neuheisel threw two touchdown passes and ran for one to keep the Gunslingers in front for most of the game.
Oakland scored on San Antonio's first play from scrimmage when linebacker Ed Smith recovered running back George Works' fumble and scored from nine yards.
The Gunslingers tied late in the first quarter on a five-yard pass from Neuheisel to tight end Joey Hackett. They took a 14-7 lead with 3:08 left in the first half on a 19-yard pass from Neuheisel to running back Don Roberts.
The game was played before 7,118 people, the San Antonio franchise's smallest home crowd.