Complex sentence: On October 23,2015, Popovich was named head coach of the U.S. men's national team, taking over from then-current head coach Mike Krzyzewski after the 2016 Olympic Games.
Split into simpler sentences: On October 23,2015, Popovich was named as the next head coach of the U.S. national team. He will take over duties from current head coach Mike Krzyzewski after the 2016 Olympic Games.