Zach Levine has some info on a few minor-leaguers, including slugger J.D. Martinez:
Levine:
An outfielder all his life, Martinez moved temporarily to first base and began to have knee problems. He was diagnosed with patellar tendinitis, and it has bothered him ever since and caused him to keep close watch on it.
Martinez:
“Some days it's better than others. This year it's a lot better because I've been monitoring it. It's not a big deal; it's just something that's going to bug me."
And we also find out that Lexington OF Brian Kemp has been put on the DL with an ankle injury.