About six weeks when going for a forehand, I overextended my left achilles tendon. I was playing on a 'city court' which had some cracks on it. Over on the deuce side just behind the baseline were some small anthills in one of those cracks. My opponent hits a nice cross-court forehand to my right (we're both right-handed), so I go running. Just as I am about to hit the ball I step with my left foot on one of those anthills, and my foot just keeps sliding and sliding instead of planting. Well, I may have just sat down on the court. No, I didn't pop or sever the achilles tendon, but I sure did stretch it and strain it. It swelled up like a golf ball that night for a day or two. Now the swelling is gone, but the injury just won't go away. There is a sizeable knot on my tendon. I wouldn't say it is greatly painful, but after hitting the next day my left ankle is tender and slightly painful. I've been to see a doctor, and he recommended a physical therapist. She used massage, and ultrasound, and had my doing stretching and strengthening exercises. These have helped--it does seem stronger but the injury will just not go away. A lot of tennis is pushing off hard and then rushing for the ball, and I just can't do this. Have you ever messed up your achilles tendon? What would you do?