The superstar outfielder did not play for the third straight game on Saturday, as the Angels dropped a 3-0 decision to the Cleveland Indians.
Trout injured his wrist on Wednesday while sliding into second base at Tampa Bay. The 26-year-old had been optimistic that he would be able to return Saturday, but he's still having some issues.
"Mike is moving in the right direction, but he's not able to swing right now, so he's day-to-day," manager Mike Scioscia said. "We'll chart the progress today and tomorrow and see where we are."
While Trout seems close to returning, the Angels placed left-hander Tyler Skaggs on the 10-day disabled list with a left adductor strain. He was scheduled to start Sunday's series finale.
X-rays and an MRI revealed only inflammation in Trout's wrist, but the Angels are taking an extra-cautious approach with the seven-time All-Star and one of baseball's best all-around players.
Trout, who is batting .309 with 30 homers and 60 RBIs in 109 games, has been relatively healthy this season. Last season, he missed 39 games with a torn ligament in his left thumb.
Scioscia said Skaggs felt tightness during his previous start on July 31, when he was tagged for 10 runs in 3 1/3 innings. Skaggs is 8-7 with a 3.34 ERA in 20 starts.