Argentine teenager Juan Martin del Potro, who has won four straight titles on the ATP tour, withdrew from the Pilot Pen tournament on Monday. No immediate reason was given for the withdrawal. Del Potro, ranked a career-best 17th in the world and seeded third at New Haven, was coming off tournament victories in Stuttgart, Kitzbuhel, Los Angeles and Washington, where he won on Sunday. The winner of 19 successive matches had been scheduled to play on Tuesday. Lucky loser Jesse Levine of the United States will take his place in the main draw. On the court, promising young American player John Isner defeated Russian Igor Kunitsyn 6-4, 6-4 in the first round. The hard-serving Isner closed out the match with a 135-mph winner against Kunitsyn, who reached the Washington semifinals last week. Isner next faces second-seeded Ivo Karlovic. Also, fellow American Wayne Odesnik beat France's Sebastien Grosjean 7-5, 6-4, and Guillermo Garcia-Lopez of Spain topped Chris Guccione of Australia 7-5, 6-3 to earn a second-round match with third-seeded Juan Martin del Potro, who has won his last four tournaments, including Washington on Sunday, and 19 successive matches. A pair of Belgians Steve Darcis and Olivier Rochus also advanced. Rochus will meet fourth-seeded Igor Andreev after beating another Russian, Evgeny Korolev 6-4, 6-4. Darcis progressed when Vince Spadea of the United States retired with a lower back injury while trailing 7-5, 5-0. Nicolas Lapentti of Ecuador also had to quit with a left knee injury while Fabio Fognini was ahead 6-4, 4-4. In women's play, No. 5 Patty Schnyder of Switzerland defeated Jill Craybas 6-4, 7-6 (2), repeating her win over the American at the Beijing Olympics last week. Schnyder was knocked out of the Olympics by Austria's Sybille Bammer in the second round and said she still felt the effects of the 18-hour flight from China to Connecticut during Monday's match.
