seen for nearly a year, undergoing surgery again in June 2015. 2016: Comeback, Olympic Silver, Davis Cup champion He played his first tournament since undergoing wrist surgery in the 2016 Delray Beach Open. In his first competitive match in almost a year, del Potro defeated Denis Kudla in two sets. He followed this up with a straight sets win over Australian John-Patrick Smith. He defeated Jérémy Chardy in two sets in the quarterfinal, reaching his first semifinal since 2014; which he lost to eventual champion Sam Querrey. He returned to Indian Wells, competing in the first round, winning against Tim Smyczek in two sets. He lost in the next round to Tomas Berdych in straight sets. His next tournament was the Miami Open. He won his first match against countryman Guido Pella in two sets. He was set to play Roger Federer for the first time in more than two years, but just hours before the match Federer withdrew due to a stomach virus. He then played lucky loser and countryman Horacio Zeballos and lost in straight sets. He then competed in his first clay-court tournament since 2013 at the BMW Open. He won his first clay-court match in three years against Dustin Brown, beating him in two sets. In his second match of the tournament, he beat Jan-Lennard Struff in his first three-set match of the year. He then lost to Philipp Kohlschreiber in the quarterfinals in straight sets. The next tournament he entered was the 2016 Mutua Madrid Open. He had his best victory after coming back on the tour, defeating 14th seed Dominic Thiem in straight sets. He lost his next match to Jack Sock in two sets. He then competed at the 2016 MercedesCup. His first grass tournament since 2013 Wimbledon Championships. He started off against Grigor Dimitrov, winning in straight sets. He then saw off John Millman in two sets. He faced fourth seed Gilles Simon in the quarterfinal, emerging victorious in three sets. He then played seventh seed Philipp Kohlschreiber, who had defeated him earlier this year at the 2016 BMW Open, losing in straight sets. He entered Wimbledon and was drawn against Frenchman Stephane Robert. He defeated Robert to set up a second-round match with fourth seed Stanislas Wawrinka, whom he defeated in four sets. Del Potro then lost in four sets against 32nd seed Lucas Pouille in the third round. In the