Complex sentence: During pit stops, Denny Hamlin climbed out of his car to surrender the rest of his day to Brian Vickers, his NNS teammate; under NASCAR rules, Hamlin started the race and was credited with any points or wins earned.
Split into simpler sentences: During pit stops, Denny Hamlin climbed out of his car to surrender the rest of his day to Brian Vickers, his NNS teammate. Under NASCAR rules, Hamlin started the race and was credited with any points or wins earned.