The Los Angeles Times is reporting Angels’ ace John Lackey will be sidelined until at least mid-May after being diagnosed with a strained right triceps.

The Angels’ rotation and, possibly, the team’s division title hopes, were dealt a significant blow Saturday when ace John Lackey was diagnosed with a strained right triceps, an injury that will sideline the right-hander until at least mid-May.

Lackey, who hasn’t missed a start in his six-year big league career but has been limited by a sore elbow to one exhibition start this spring, felt discomfort after Wednesday’s bullpen workout and said his elbow “locked up pretty good” Friday.

An MRI test revealed the strain, which is just above the elbow, on the outside of Lackey’s arm. His previous pain was below the elbow, on the inside of his forearm. Lackey, who was 19-9 with an American League-leading 3.01 earned run average last season, will be held out of baseball-related activities for three to four weeks and won’t throw until mid-April.

As far as fantasy purposes are concerned, Dustin Moseley is supposed to take Lackey’s spot in the rotation, but there has to be better options in your free agency pool.