 Complete the following phrase:  This is a list of the main career statistics of Argentine professional tennis player, Juan Martín del Potro. To date, Del Potro has won 22 Association of Tennis Professionals ATP singles titles, including one Grand Slam singles title at the 2009 US Open and one Masters 1000 singles title at the 2018 BNP Paribas Open. He was also the runner-up at the 2009 ATP World Tour Finals, a semi-finalist at the 2009 and 2018 French Opens and 2013 Wimbledon Championships, a quarterfinalist at the Australian Open in 2009 and 2012, a bronze medalist at the 2012 London Olympics, and a silver medalist at the 