Hewitt, representing Australia, also had to come from behind in the final set Tuesday to advance to the second round after laboring for 2 hours, 35 minutes.
"There were a lot of momentum changes throughout the match," said Hewitt. "He's a tough player and competitor out there. I was happy to get through it."
Hewitt moved on to play third-seeded Sam Querrey of the United States in the second round.
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