Unseeded American Sam Querrey has won the ATP Mexico Open hard court tennis tournament. In the final at Acapulco in Mexico, Querrey stunned second-seeded Rafael Nadal in straight sets 6-3, 7-6. In the process, the American ended the Spaniard's run of perfection in the tournament. Nadal, the 2005 and 2013 champion, had never even lost a set in Acapulco. Querrey, ranked 40th in the world, fired 19 aces, backed up by powerful, precise groundstrokes, en route to his first career victory over Nadal in five meetings. For Querrey, it is his ninth ATP title. In an impressive week he beat four top-10 players — Belgian David Goffin, Austrian Dominic Thiem, Australian Nick Kyrgios and sixth-ranked Nadal. He's projected to return to the top 30 in the world rankings on Monday.