PARIS (AP)—Martina Navratilova has a tiring schedule lined up for the French Open - radiation therapy for cancer, playing in a senior doubles event and calling matches on TV for Tennis Channel.

Navratilova says Monday that she is in her second week of treatments after being diagnosed this year with a noninvasive form of breast cancer and having a lumpectomy in March. She went public with her illness last month.

``So far, so good,'' she says.

The 53-year-old Navratilova has been practicing at Roland Garros with doubles partner Jana Novotna ahead of the four-team mini-tournament they'll participate in during the second week of the French Open.

The clay-court Grand Slam event begins Sunday.