The Houston Astros (800/278-7672. www.astros.mlb.com) play downtown at Minute Maid Park, a retractable roof stadium that began life as Enron Field. The Houston Rockets (713/627-3865. www.nba.com/rockets), Houston's NBA franchise, play their home games at Toyota Center downtown, just a few blocks from Minute Maid Park and the George R. Brown Convention Center. The American Hockey League's Houston Aeros (713/974-7825. www.aeros.com) share the Toyota Center with the Rockets. The Aeros are the primary developmental affiliate of the NHL's Minnesota Wild. Major League Soccer's Houston Dynamo (713/276-7500. web.mlsnet.com) were MLS Cup champs in 2006 and 2007. The team plays at the University of Houston's Robertson Stadium, just south of downtown on I-45.