Tidwell, who is currently pitching for Triple-A Sacramento, experienced discomfort in his right shoulder following a recent bullpen session, according to manager Bob Melvin, and is scheduled to undergo an MRI on Thursday.

An MRI performed on Toronto first baseman Vladimir Guerrero Jr.'s tight left hamstring showed no damage, though he was not in the lineup Tuesday night for the Blue Jays' game in Pittsburgh. Blue Jays manager John Schneider said he wanted to be cautious with Guerrero and that the five-time All-Star could return Wednesday afternoon for the finale of the three-game series.

Meet the experts: Daniel Durand, M.D., M.B.A., chief medical officer and president of Prenuvo Medical Group; Ken Berry, M.D., family physician and co-author of Common Sense Labs; and Mia Kazanjian, M.D., board-certified radiologist specializing in breast and body imaging

In June this year, Paul Henderson received test results showing elevated PSA levels. In this weekly diary, he will be sharing what life is like in the weeks that follow: the tests, the scans, the fear and what it’s like when you have to sit down with your loved ones to discuss the possibility of cancer.

Magnetic-resonance imaging machines can be intimidating for children who are due for an MRI procedure. A new simulator aims to help.

Keith McAllister, 61, died after he entered an MRI room at Nassau Open MRI in Westbury last week while a scan was in progress.

Giants pitcher Landen Roupp will head to San Francisco on Thursday to get an MRI on what the team initially is calling a left knee sprain.

The New York Yankees and Tampa Bay Rays are playing a two-game series this week at Steinbrenner Field in Tampa, Fla.