Cam Collier, the Cincinnati Reds' 20-year-old infield prospect, is scheduled to have surgery on his injured left thumb this week.

The Reds are going to take some more time and a closer look at the lower back pain that resulted in Tyler Stephenson being scratched from a game.

Goodyear, AZ, USA; Cincinnati Reds catcher Tyler Stephenson poses for a portrait during Media Day at the Cincinnati Reds Development Complex. Mandatory Credit: Mark J. Rebilas-Imagn Images / Mark J. Rebilas-Imagn Images The Reds are sending Tyler Stephenson to get an MRI on his back to make sure nothing serious is going on,