Rangers shortstop Elvis Andrus said the key with Richards is "You don't know what's coming. He can sink. He can cut the ball. He's controlling his breaking pitch the way he wants to, to keep the ball down."
The Rangers (38-55) have lost 12 of their last 13 games and 20 of their last 23, saddling them with the worst record in the major leagues.
Texas manager Ron Washington delivered a passionate, 30-minute talk to his players after their 15-6 loss to Los Angeles on Thursday night and said he saw progress from his team in Friday's defeat.
"We played a much crisper game," Washington said. "It's tough when you have to face a guy like Richards."
Pujols opened the Angels' seventh with a shot that went under Andrus' glove and was ruled a single. Josh Hamilton pulled a liner to the right side that skimmed off the glove of second baseman Rougned Odor, sending Pujols to third.
Aybar hit an opposite-field flare to left that scored Pujols and ended Tepesch's night. David Freese greeted reliever Neftali Feliz with a single up the middle to score Hamilton.
Rangers third baseman Adrian Beltre, one of the club's two All-Stars, extended his hitting streak to 15 games with a third-inning single.
NOTES: The Rangers signed RHP Jerome Williams, released by Houston in June, to a minor league contract and assigned him to Triple-A Round Rock. Williams was 1-4 with a 6.04 ERA in 26 appearances. ... Angels RHP Jared Weaver said he will be ready to start Saturday after leaving Monday's game after two innings with a stiff back. ... Rangers C Geovany Soto made a written apology through the club after being arrested Wednesday on a misdemeanor charge of marijuana possession.