Arizona's Sean Miller will replace Billy Donovan as the head coach of the men's U19 world championship team, USA Basketball announced.
Donovan withdrew after leaving Florida for the Oklahoma City Thunder last month.
Miller was an assistant coach on last summer's U18 national team, when the United States won the gold medal at the FIBA Americas Championship. He also won a gold medal as a player on the 1991 World University Games team.
"I am honored to be named head coach of the USA Basketball men's U19 world championship team," Sean Miller said. "It is exciting to be coaching such a talented group of young players, as well as working alongside a great coaching staff. I look forward to the responsibility and challenges that lie ahead in our journey to win the gold medal at the 2015 FIBA U19 World Championship."
Providence's Ed Cooley will remain as an assistant coach, while Dayton's Archie Miller, Sean's brother, will join the staff as an assistant coach.
"The appointments of Sean Miller, Ed Cooley and Archie Miller to lead the USA Basketball men's U19 world championship team gives that group of players three of the most successful teachers in college basketball," said Syracuse's Jim Boeheim, chair of the USA Basketball junior national team committee. "All three coaches have taken their respective programs to an elite level, and now they will combine their talents to have the U19 group prepared for a gold-medal run."
Miller is 163-52 in six seasons as the head coach of Arizona, reaching the Elite Eight three times.
The U19 World Championship will take place in Greece from June 27-July 5. The USA is the defending champion, winning gold in 2013.