"Magnus", by Randall Munroe, licensed under Creative Commons Attribution-NonCommercial 2.5 License
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In the latest round, 9-year-old Muhammad Ali beat 10-year-old JFK at air hockey, while Secretariat lost the hot-dog-eating crown to 12-year-old Ken Jennings. Meanwhile, in a huge upset, 11-year-old Martha Stewart knocked out the adult Ronda Rousey.