"Let's see what happens," Aybar said in Spanish. "I can't tell you yes or no. We're trying to combat this as quickly as possible to see if it loosens up by tomorrow."
Aybar hurt himself running out a grounder in the second inning at Rangers Ballpark, an 8-7 loss that put the Angels three games back of the second American League Wild Card spot with three to play.
Aybar, with a .347 batting average since the start of August that ranks second in the AL, stayed away from pregame activities at Safeco Field, only receiving a massage in the area and riding the stationary bike for about a half-hour. The only way manager Mike Scioscia said Aybar might be available Monday night was to possibly lay down a bunt off the bench.
"It still hurts," Aybar said. "It's still tight."