WASHINGTON — Andy Murray is back on hard courts for the first time in four months — and back at the Citi Open for the first time in nine years. The two-time major champion is seeded No. 1 at the US Open tuneup that began Monday, getting his game in gear on the surface on which he won his first Grand Slam title at Flushing Meadows in 2012. Like other seeded players, Murray received a first-round bye, and his initial match in Washington, where he hasn't played since he was the 2006 runner-up, comes Wednesday against 53rd-ranked Teymuraz Gabashvili of Russia. That will be Murray's first competition on a hard court since losing in the final at Miami to top-ranked Novak Djokovic in early April. In the Citi Open's first completed match, Louisa Chirico beat Heather Watson 6-3, 6-0. It was Watson's first tournament appearance since she pushed eventual champion Serena Williams to three sets in the third round at Wimbledon. Yulia Putintseva got past Kurumi Nara 4-6, 6-4, 7-6 (4), and sixth-seeded Irina-Camelia Begu defeated Madison Brengle 6-4, 6-0. In men's action, Gabashvili outlasted Benjamin Becker 4-6, 6-1, 6-3; Donald Young beat Tommy Haas 6-3, 6-4; Hyeon Chung defeated Dudi Sela 6-2, 6-1 and now faces reigning US Open champion Marin Cilic; James Duckworth eliminated Ryan Harrison 6-1, 7-6 (4) and will meet US Open runner-up Kei Nishikori; and Victor Estrella Burgos edged Nicolas Jarry 4-6, 6-3, 6-4 to set up a match against eighth-seeded John Isner. Haase advances Two-time former champion Robin Haase of the Netherlands advanced to the second round of the Generali Open Monday after his opponent Juan Monaco pulled out in the second set with a right-wrist injury. The fifth-seeded Argentine, also a former winner in 2007, led 6-2, 1-1 when he walked off the court and sat down on his chair in tears. He received medical treatment but decided not to play on. Monaco had wrist problems before when they forced him to sit out the final months of the 2013 season. Haase will next play another Argentine, Federico Delbonis, who beat Pablo Carreno Busta of Spain 7-5, 6-4. Earlier, Austrian wild-card entry Dennis Novak rallied to beat Aljaz Bedene of Britain 6-7 (2), 6-4, 6-1. It was the first win at ATP level for the 256th-ranked Novak, who will play third-seeded Fabio Fognini of Italy in the second round. Diego Schwartzmann of Argentina defeated the eighth-seeded Albert Ramos-Vinolas of Spain 6-3, 6-4 after scoring 12 straight points from 1-2 down in the second set. Also, Santiago Giraldo of Colombia defeated Rogerio Dutra Silva of Brazil 7-5, 6-2, and Paul-Henri Mathieu beat fellow Frenchman Kenny de Schepper 6-2, 6-2. — AP