PARIS >> Maria Sharapova was unfazed by the boos she heard when leaving the center court of Roland Garros on Monday without treating the crowd to a post-match interview. After all, she had good reasons to rush to the locker room.Battling a cold that her coughing at times during the match, the defending champion was not in the mood for small talk after beating Kaia Kanepi 6-2, 6-4 in the first round, having been made to work harder than the scoreline suggested.