Though most in the tennis world are paying attention to what's going on in London, there still is an ATP tournament being held this weekend -- the 2012 Citi Open. Unfortunately for American tennis fans, top-seeded Mardy Fish was upset on Saturday.

Fish was upset by fourth-seeded Tommy Haas, 6-3, 7-5. Fish had won his second and third round matches in straight sets, but couldn't even take home on set in the semifinal match.

Haas has yet to drop a set in the tournament. Haas won his first round match over Michael Russel 6-4, 6-2, his second round match over Leonardo Mayer 6-4, 7-5, and his quarterfinal match over Tobias Kamke 6-1, 6-2.

Haas will face either American and eighth-seeded Sam Querrey or second-seeded Alexandr Dolgopolov in the final, which will be held on Sunday.

The women's final will be held on Saturday night, between top-seeded Anastasia Pavlyuchenkova and Magdalena Rybarikova.

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