Complex sentence: Later that day, Mitchell scored 37 points against the Memphis Grizzlies in the 2017 NBA Summer League in Las Vegas, the most by any player during the 2017 NBA Summer League.
Split into simpler sentences: Later that day, Mitchell scored 37 points against the Memphis Grizzlies in the 2017 NBA Summer League in Las Vegas. The most by any player in the 2017 NBA Summer League.