Austin Wiley secured his second double-double of the FIBA U19 World Cup on Friday, and Team USA secured a berth in the tournament's semifinals.

Wiley had 19 points and 10 rebounds to lead Team USA past Germany, 81-59, in the Americans' toughest test to date. Germany and USA went back and forth early on, with the Germans holding a 12-11 lead midway through the first.

"It was just a real physical game," Wiley said. "We all wanted to make it to the semifinals. Germany came out playing their best, and we came out a little slow, but we got it together and continued to play hard."

Wiley had six points and three rebounds in the first half, as Team USA took a two-point advantage into the break at 33-31. Wiley's six points -- on 3-of-7 shooting -- led Team USA in the first half.

Team USA pulled away in the third quarter and closed the on a 21-4 run. The Americans outscored Germany, 23-10, in the period, with Wiley scoring nine of his 19 points during the third quarter.

"There really wasn't a difference," Wiley said about the second-half effort. "We came with the same mentality. We kept pressuring and pressuring them, and eventually they folded, so that was good from us."

It was Wiley's second double-double of the tournament; he had 16 points and 16 rebounds against Angola in group play. His 10 rebounds against Germany led Team USA, with five coming on each end of the floor.

"I was just doing whatever I thought we needed from me to win the game-- whatever (coach John Calipari) and my teammates needed me to do," Wiley said.

Wiley was one of just two Team USA players to finish in double-figure scoring, as Cameron Reddish finished with 12 points, four rebounds and four assists.

Team USA will play Canada on Saturday in the tournament semifinals, with a trip to the championship game on the line.