Two-time major champ Petra Kvitova retires at 35
Two-time major champion Petra Kvitova retired from professional tennis following a 6-1, 6-0 loss to France's Diane Parry in the first round of the U.STwo-time major champion Petra Kvitova retired from professional tennis following a 6-1, 6-0 loss to France's Diane Parry in the first round of the U.S