Hirschbeck, the son of umpire John Hirschbeck, died Tuesday at age 27. He had battled adrenoleukodystrophy, a disease that affects the brain and nervous system.
Once while in Minneapolis for medical tests at the University of Minnesota, former Twins manager Tom Kelly invited the younger Hirschbeck to be the team's batboy for a game. It was the beginning of a relationship between Michael and the Twins that continued when Gardenhire became manager.
Tampa Bay left-hander Matt Moore plans to play catch in a few days to see how his left elbow is feeling.
Moore went on the 15-day disabled list Tuesday. He also experienced elbow soreness last year while going 17-4 with a 3.29 earned-run average for the Rays.