Melanie Oudin, who was diagnosed with the muscle-damaging condition rhabdomyolysis lastNovember, is back on court training again.

Oudin’s friend, fellow player Alison Riske, says that the former U.S. Open quarterfinalist feels 100 percent and hopes to return to action next month. Oudin said when she was diagnosed that she had to shut down any type of physical activity for three weeks and that the condition is caused by intense exertion.