ASK Riga put the finishing touches on their EuroCup Qualifying Round 2 triumph over Cajasol by winning the second leg in Spain 68-65 on Tuesday.
The Latvians had won the first game on home soil 83-69.
AKA Riga enjoyed a 34-21 advantage late in the first half, only for the hosts to score the last eight points of the second quarter to trail 34-29.
The Cajasol crowd got excited when Pedro Rivero del Caz drilled a three at the start of the fourth quarter to give the Sevilla outfit a 52-49 lead, thus cutting their deficit in the tie to 11.
The Spanish ran out of steam, however, going nearly five minutes without a basket and ASK went on to claim a narrow triumph on the night.
Bruno Sundov led ASK with 19 points and seven rebounds.
Rivero del Caz scored a team-high 11 for Cajasol.