Top-Seeded Alexander Zverev Advances To National Bank Open Quarterfinals

Top-seeded Alexander Zverev of Germany led Francisco Cerundolo 6-4, 1-0 when the 14th-seeded Argentine retired because of an abdominal injury Saturday night in the National Bank Open.

Top-Seeded Alexander Zverev Advances To National Bank Open Quarterfinals
Top-seeded Alexander Zverev of Germany led Francisco Cerundolo 6-4, 1-0 when the 14th-seeded Argentine retired because of an abdominal injury Saturday night in the National Bank Open.