Both Murray and Del Potro joined Charles Winslow of South Africa and British Josiah Ritchie on a record two Olympic medals in the men 's singles .
Del Potro also took bronze in this event in 2012 .
Both Murray and Del Potro , who also took bronze in this event in 2012 , joined Charles Winslow of South Africa and British Josiah Ritchie on a record two Olympic medals in the men 's singles .