Premise: The ATP World Tour Masters 1000 ( previously known as the ATP Championship Series , Single-Week , ATP Super 9 , Tennis Masters Series , and ATP Masters Series ) is the third highest tier of men 's tennis tournament after the four Grand Slam tournaments and ATP World Tour Finals . Andrew Stephen `` Andy '' Roddick ( born August 30 , 1982 ) is an American former professional tennis player . Following a fourth-round defeat by Juan Martín del Potro , Roddick retired from the sport with the aim of focusing on his foundation , the Andy Roddick Foundation , in future years . The Grand Slam tournaments , also called majors , are the four most-important annual tennis events . World Team Tennis is a mixed-gender professional tennis league played with a team format in the United States , which was founded in 1973 .
Hypothesis: Andy Roddick is an athlete.
Label: ENTAILMENT