It wasn’t until after Andrew Heaney’s start in Tuesday’s 6-1 loss that the strained flexor muscle in his pitching arm became a significant concern. The left-hander said the ball felt different coming out of his hand beginning in the fourth inning, but he could still pitch effectively.

When it was brought to his attention after the game that his velocity slightly declined during the game, he decided to talk with the Angels training staff, who discovered the strain to his forearm was worthy of a stint on the 15-day disabled list.

Heaney’s disappointment is only enhanced by the prominent role he was in line for this season.

With Jered Weaver’s status uncertain, he was dubbed the Angels No. 2 starter. He was replaced on the roster by Nick Tropeano, who has 11 career starts in the major leagues.

“It sucks. I felt so good in spring and then I felt like I was going to be relied on,” Heaney said. “(The injury) is a little embarrassing… I think it’s fluky but some perceive it as ‘First game of the year. How the hell does that happen?’”