On March 18 and 20, 2006, PETCO Park hosted the Semi-Finals and the Finals of the first World Baseball Classic. In February 2007, PETCO Park will become the new host of the USA Sevens, a rugby union sevens event within the IRB Sevens World Series.  Opened in 2004, PETCO Park replaced Qualcomm Stadium as the home park of the San Diego Padres.  PETCO Park differentiates itself from other MLB ballparks built in the same era by eschewing retro-style red brick and green seats.  PETCO Park is an open-air stadium in downtown San Diego, California.  PETCO Park is named after the animal and pet supplies retailer PETCO, which is based in San Diego and paid for the naming rights.  The official address of PETCO Park is 19 Tony Gwynn Way, in honor of the eight-time National League batting champion who wore that uniform number during his entire major league career with the Padres. In the first game ever played at PETCO Park, on March 11, 2004, the San Diego State Aztec baseball team, of which Gwynn is the head coach, notched a victory.