John IsnerNEWPORT, Rhode Island – Top seeds John Isner, Kei Nishikori and Milos Raonic all advanced to the second round of the $398,250 ATP Hall of Fame Championships Tuesday while three other seeds were eliminated. US top seed Isner edged Ukrainian qualifier Sergei Bubka 7-6 (7/3), 4-6, 6-3, to book a second-round match on the Newport grass against Frenchman Nicholas Mahut, his opponent in the longest match in tennis history. Japanese second seed Nishikori ousted Dutchman Igor Sijsling 6-4, 6-4 to book a second-round match against Belgium's Olivier Rochus. Canadian third seed Raonic rallied to outlast Australian Matthew Ebden 3-6, 6-3, 7-5. Raonic next meets German qualifier Benjamin Becker, who defeated rising Belgian star David Goffin 6-4, 6-3. South African Izak Van Der Merwe defeated eighth seed Gilles Muller of Luxembourg 7-6 (7/5), 6-7 (3/7), 6-4, while Russian fifth seed Alex Bogomolov fell to American Sam Querrey 7-5, 7-6 (7/5) and American Tim Smyczek beat Uzbek fourth seed Denis Istomin 6-3, 6-3. Errani cruises Top-seeded Sara Errani cruised past Edina Gallovits-Hall of Romania 6-1, 6-1 in the first round of the Italiacom Open Tuesday, while five-time champion Anabel Medina Garrigues lost 6-1, 6-3 to Italian wild card Maria Elena Camerin. Tipsarevic in quarters Top-seeded Janko Tipsarevic of Serbia cruised into the quarterfinals of the Mercedes Cup by beating Steve Darcis of Belgium 6-4, 6-2 Wednesday. Earlier, Guillermo Garcia-Lopez of Spain upset fourth-seeded countryman Pablo Andujar 6-1, 4-6, 6-1 to make the quarterfinals of the clay-court event. Garcia-Lopez will next play German wild card Dustin Brown, who beatPaire of France 7-6 (4), 4-6, 6-1. Another German reached the last eight when Bjorn Phau defeated Lukas Rosol of the Czech Republic 7-6 (3), 7-6 (2). Cilic beats Brands Marin Cilic defeated Daniel Brands of Germany 6-3, 6-2 to advance to the quarterfinals of Croatia Open in Umag Wednesday. Matthias Bachinger of Germany downed seventh-seeded Martin Klizan of Sloavkia 6-2, 2-6, 6-4. Klizan lead 4-2 in the third set and looked set to make his first ATP quarterfinal appearance. US Open prize money US Open prize money will jump by more than $2 million this year to a record $25.5 million with another $2.6 million in potential bonuses available, the US Tennis Association announced Wednesday. For the 40th year in a row, women and men will receive equal prize money, with each singles champion taking home a record $1.9 million and potentially up to $1 million each in bonus money for performance in US Open tuneup events. This year's US Open prize purse features an 11 percent overall increase in men's and women's singles draws. First-round prize money will be boosted by 21 percent over last year. Second-round prize money will jump 19 percent. — Agencies