Dimitrov upsets US Open champion Thiem at Australian Open
AFP
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Buglaria's Grigor Dimitrov celebrates his win over Austria's Dominic Thiem in their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Feb. 14, 2021. (Photo: AP)

Bulgaria's Grigor Dimitrov beat US Open champion and world number three Dominic Thiem 6-4, 6-4, 6-0 to reach the Australian Open quarter-finals on Sunday.

Austria's Dominic Thiem hits a forehand return to Buglaria's Grigor Dimitrov during their fourth round match at the Australian Open tennis championship in Melbourne, Australia, Sunday, Feb. 14, 2021. (Photo: AP)

The 18th seed won in just over two hours against a fatigued-looking Thiem, last year's runner-up who had come through a five-setter against Nick Kyrgios in the previous round.