Complex sentence: The Vipers made it a 6-point game with 28 seconds left after a touchdown run, but their ensuing onside kick was recovered by Tulsa, who ran out the clock to preserve the win.
Split into simpler sentences: The Vipers made it a 6-point game with 28 seconds left after a touchdown run. Possession was given to Tulsa, and they ran out the clock to preserve the win.