After the on-field umpire ruled it an out, the Padres' bench was left perplexed, and manager Craig Stammen even challenged the call, but the umpires upheld the on-field decision.
Tennis World USA on MSN
Daniil Medvedev says Novak Djokovic is 'crazy because he is old' in Beijing
The 30-year-old booked his place in the last four after beating Francisco Cerundolo 7-6(4), 6-3 on Sunday.
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