Rain has suspended play at the Pilot Pen tennis tournament, pushing Sunday's scheduled matches to Monday. Several qualifying matches began indoors at the Cullman-Heyman Tennis Center on the campus of Yale University after overnight rain, and another storm moved through in the afternoon, forcing the suspension of some first-round men's and women's matches and the postponement of others. "It's really difficult to concentrate on your game and concentrate on the schedule of your match [when it rains]," said Russia's Elena Vesnina, who advanced to the main draw through qualifying and played indoors Sunday. "I had this experience last year, so I was just stronger and had to concentrate." Read more: http://sports.espn.go.com/sports/tennis/news/story?id=5484541