Complex sentence: The Thunder had a chance to tie the series in Game 4, but they were unable to hold a 15-point lead with five minutes remaining in the fourth quarter and ended up losing in overtime by the score of 112--105.
Split into simpler sentences: The Thunder had a chance to tie the series in Game 4, but they were unable to hold a 15-point lead with five minutes remaining in the fourth quarter. They ended up losing in overtime by the score of 112--105.