The Yankees are likely to be without two star players, the outfielders Aaron Judge and Giancarlo Stanton, for opening day on March 26 against the Orioles in Baltimore, General Manager Brian Cashman told reporters at the team’s spring training facility in Tampa, Fla., on Tuesday. Both could return as soon as April.

Judge, 27, is the latest key Yankee to be vexed by an injury. What began as right shoulder soreness is now being described as discomfort in his right pectoral muscle. When he began ramping up his throwing and hitting last week, he reported feeling something awry near his chest. The team sent him for a new round of examinations which continued into Tuesday.

Cashman told reporters that Judge was responding well to recent treatments, but the Yankees were still trying to figure out exactly what was ailing him.

Judge’s absence is complicated by Stanton’s continuing health struggles. During defensive drills last week, Stanton, 30, strained his right calf. According to Manager Aaron Boone, it was the lowest grade of a strain on a scale of three, but that didn’t give Stanton much time to be ready for the season’s first game.