Replacement Lesley Vainikolo scored with 90 seconds left to give Gloucester a 19-12 win over Leicester - their fourth successive Aviva Premiership win after an enthralling Kingsholm tussle.
The former England wing powered over in blockbusting fashion, claiming a try that required confirmation from the video referee before it was awarded.
Goalkickers Nicky Robinson and Billy Twelvetrees had earlier cancelled each other out at Kingsholm, slotting four penalties apiece.
Robinson's 72nd-minute miss after Tigers centre Matt Smith was sin-binned looked to have cost his team dear, but Vainikolo got him out of jail.
Robinson converted Vainikolo's score for a 14-point haul, leaving champions Leicester still searching for a first domestic away-day success this season.