Peristeri was down 11 points in the third quarter but put 32 on the board in the last 10 minutes to stun Barcelona and its home crowd .
Barcelona had controlled the game most of the way .
Peristeri was down 11 points in the third quarter but put 32 on the board in the last 10 minutes to stun Barcelona , which had controlled the game most of the way , and its home crowd .