Emma Navarro holds off Katerina Siniakova, books San Diego quarterfinal spot

San Diego [US], March 1 (ANI): World No. 26 Emma Navarro moved to her third quarter-final of this season after beating Katerina Siniakova 6-3, 3-6, 6-1 at the San Diego Open.

Navarro will next face Australian qualifier Daria Saville in a quarter-final. While Siniakova outperformed her from the baseline, hitting 23 wins to Navarro's 15, the American remained tough to break.

Siniakova attempted nine break points, but Navarr