Wimbledon only started yesterday, but it's already seen a few big surprises! Rafael Nadal lost to Belgium's Steve Darcis (ranked 135th): 7-6 (7-4), 7-6 (10-8), 6-4. Stanislas Wawrinka lost to Australia's Lleyton Hewitt: 6-4, 7-5, 6-3. And in women's singles, Maria Kirilenko lost to hometown-girl Britain's Laura Robson, 6-3, 6-4.

Check out USAToday's Wimbledon 2013: 10 things to know for some fun facts about this year's Major.

If you want to learn more about the history of the game, check out the KCTL Calendar: Wimbledon. And check back next for the Jon vs. Jon Wimbledon bracket. (Here's the Jon vs. Jon French Open results.)

R. Nadal (left) and S. Darcis. Photo: Kirsty Wigglesworth/AP; Mike Hewitt/Getty Images

L. Robson (left) and M. Kirilenko. Photo from Independent.co.uk.

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