Rivas Ecopolis put up a brave fight against UMMC Ekaterinburg on Wednesday but the Russians won on home soil in EuroLeague Women Group B.
Leading by just one at half-time and trailing 47-46 at the end of the third quarter, Ekat came good in the fourth and posted a 68-60 victory.
Gundars Vetra's team has now won seven of its eight games, with the only defeat coming at home to undefeated Fenerbahce.
Cappie Pondexter led the UMMC offensive attack with 21 points, including a go-ahead three-ball from the arc at the beginning of the fourth quarter.
Rivas, who didn't have injured Amaya Valdemoro, played with great resolve and had a 47-46 lead going into the last quarter following a basket by Courtney Paris.
When play started in the last quarter, Pondexter popped a three and then her teammate Agnieszka Bibrzycka drilled another.
UMMC had the lead for good.
A DeWanna Bonner jumper and two Anna Cruz free-throws reduced the Rivas deficit to 52-51, but Maria Stepanova answered with a jump shot for UMMC and Bibrzycka buried another from behind the arc to put the hosts in front, 57-51.
Bonner, who finished with 15 points, tried to keep Rivas close.
Her two free-throws made it a four-point game.
Stepanova replied with a three-point play and added another basket for a 62-53 advantage.
Rivas got no closer than six the rest of the way and fell to 3-5.