Rangers closer Joe Nathan confirmed that he received a cortisone injection last week to alleviate some shoulder inflammation that arose last week, but said the injection worked well. Nathan struggled or the final three weeks of July, then pitched on back-to-back days against Los Angeles Wednesday and Thursday and proceeded to throw 61 pitches over two days. It's the most he's thrown over a two-day span since undergoing Tommy John elbow surgery in 2010. He got the first two days of the weekend off, but did warm up Sunday.