Rebecca Marino qualified for the second round of the Monterrey Open, beating Fernanda Contreras Gomez 7-6 (4), 7-6 (4) on Monday night.
The two players fought a bitter battle that lasted an hour and 42 minutes.
The 32-year-old Canadian had 11 aces during this intense match, against four for her 25-year-old opponent.
Marino committed four double faults, won 55 points on serve and 26 on return. Both players won 11 games on serve, but Marino won three games on the return to only one for Contreras Gomez.
Marino will now face Chinese fifth seed Lin Zhu, who beat Hungary’s Anna Bondar, 6-4, 7-6(4) earlier in the day.
The hard court tournament runs until Sunday.
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