A club official said results of the MRI were not yet available and Martin would be examined by Dr. Neal ElAttrache on Saturday night.
Torre said Martin came out of Friday's exhibition opener against the White Sox after five innings. Torre said Martin complained of discomfort and said it had been bothering him for several days, "which we didn't know about."
"I'm concerned," said Torre. "I hope it's nothing and he'll get better with a little rest. We'll see. Evidently, it couldn't be too bad if he felt it for days. He thought it was Spring Training discomfort."
Torre pointed to the right hip area and said "it looks that way," when asked if it was similar to the area that plagued former Dodgers infielder Tony Abreu, who first underwent a sports hernia operation, but ultimately needed arthroscopic surgery to repair torn hip labrum.
Yankees star Alex Rodriguez underwent a form of that surgery last spring and missed two months.
Martin, who caught more innings than any catcher in the Major Leagues last year, reported to Spring Training with 25 pounds of added bulk after a rigorous offseason regimen designed to make him stronger.
A two-time All-Star who won a Silver Slugger and Gold Glove in 2007, Martin's offensive production has slipped the past two seasons. Last year, he hit .250 with seven homers and 53 RBIs, not hitting his first homer until June 20. In 2007, he hit .293 with 19 homers and 87 RBIs.
One trademark of Martin's career is durability. He is averaging 150 games played over the past three years, when he has led all Major League catchers with 414 starts and 3,693 innings caught.
Ken Gurnick is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.