Rafael Nadal holds off Grigor Dimitrov, reaches Aussie Open semis

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After losing the first set, Rafael Nadal came storming back to beat Grigor Dimitrov 3-6, 7-6 (3), 7-6 (7), 6-2 :: Paul Crock/AFP/Getty Images

Copyright 2014 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.