Alex Brandon/AP Alex Brandon/AP

Nationals right-hander Christian Garcia underwent an MRI today on his right wrist and forearm to diagnose what he described as “a tight kind of pull thing” in his arm.

Garcia played catch yesterday and will stay off the mound for at least a few days. Garcia, who has undergone three elbow surgeries in his professional career, remained confident the issue is minor.

“As long as it’s not my elbow or shoulder, it’s something that at minimum we can get it fixed, in a short amount of time, too,” Garcia said.

Garcia felt the twinge in his arm Sunday while throwing a bullpen session. It affects only when he throws a fastball, he said, and not when he throws a changeup or curve.

“I have no idea what it could be,” Manager Davey Johnson.

Garica, incidentally, has also been dealing with a pain in stomach recently. He also had tests to determine the cause of that discomfort. Johnson was concerned yesterday that Garcia may have appendicitis, but doctors have ruled that out.

“The stomach feels way better,” Garcia said.