Federer's U.S. Open quest ended by big-hearted Del Potro

NEW YORK - Roger Federer’s hopes of claiming a record-extending 20th grand slam title ended on Wednesday when he was beaten 7-5 3-6 7-6(8) 6-4 by Juan Martin del Potro in a thrilling U.S. Open quarter-final.
Juan Martin del Potro stuns Roger Federer in epic quarter-final. / Internet photo
Juan Martin del Potro stuns Roger Federer in epic quarter-final. / Internet photo
Quartz