The Marlins placed Tinoco on the 15-day injured list Friday with a right forearm strain.
Tinoco didn't strike out a single batted over his last five appearances and had been deployed in low-leverage situations lately, so it's possible he's been hurt for a while. Per Daniel Alvarez-Montes of ElExtraBase.com, an MRI on Tinoco's forearm didn't reveal any structural damage, but it's not clear how long he might be shelved.