Complex sentence: During the 2007 regular season, Brett Favre surpassed Elway to become the starting quarterback with the most wins in NFL history, and his record stands at 186; however, Peyton Manning needs only one more win to tie this record.
Split into simpler sentences: During the 2007 regular season, Brett Favre surpassed Elway to become the starting quarterback with the most wins in NFL history, and his record stands at 186. However, Peyton Manning needs only one more win to tie this record.