NEW YORK — Juan Martin del Potro is through to the fourth round at the U.S. Open.
The 2009 champion beat No. 31 seed Fernando Verdasco 7-5, 7-6 (6), 6-3 in the final match of the night.
Next up for del Potro, the No. 3 seed, is No. 20 seed Borna Coric.