An MRI on Nationals right-hander Stephen Strasburg confirmed he has an upper-back strain. Strasburg's DL move was made retroactive to June 16.

Micah Parsons has blamed back tightness for his absence from Dallas Cowboys practice, and he reportedly had a recent MRI.

NEW YORK (AP)—Kei Nishikori withdrew from the US Open on Wednesday, saying a back injury has not fully healed. Nishikori was injured in May and pulled out of the French Open. The 2014 US Open ...

The Cowboys star edge rusher held in during training camp, occasionally citing back tightness for missing practice.

After the shin problem was confirmed by an MRI exam, Korda needed a bit of a break, and only was back to hitting balls at 100% about two weeks ago.

Japan's Kei Nishikori said Wednesday he will miss the U.S. Open tennis championships starting this weekend because of a back injury. "Hi fans, unfortunately I will not be ready for the U.S. Open ...