Day Five at Wimbledon

Updated 1914 GMT (0314 HKT) July 1, 2016
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Early in his match against Stan Wawrinka in the second round at Wimbledon, Juan Martin del Potro took a seat on the grass. Shaun Botterill/Getty Images Europe/Getty Images
Beset by wrist injuries, del Potro fell behind by a set to Wawrinka. Clive Brunskill/Getty Images Europe/Getty Images
But del Potro, the 2009 U.S. Open champion, stormed back to take the second set, helped by Wawrinka's dip. JUSTIN TALLIS/AFP/AFP/Getty Images
The swoon continued for Wawrinka, who lost the third set in a lopsided tiebreak. JUSTIN TALLIS/AFP/AFP/Getty Images
Del Potro offered up a kiss after he clinched the match in four sets. It was his first top-five win in three years. ADRIAN DENNIS/AFP/AFP/Getty Images
A jubilant del Potro walked off court. He'll now face France's Lucas Pouille in the third round. ADRIAN DENNIS/AFP/AFP/Getty Images
Del Potro and Wawrinka played under a roof on Centre Court ... because of yet more rain at SW19. Julian Finney/Getty Images Europe/Getty Images
Serena Williams also played under the roof and was involved in a major struggle. Clive Brunskill/Getty Images Europe/Getty Images
Williams defeated fellow American Christina McHale 6-7 (7-9) 6-2 6-4. ADRIAN DENNIS/AFP/AFP/Getty Images
Older sister Venus had an even tougher time. The five-time winner fended off Daria Kasatkina in a 10-8 third set on court 1. GLYN KIRK/AFP/AFP/Getty Images
Novak Djokovic, who has won four straight majors, trailed American Sam Querrey when rain halted play at 8 p.m. local time. GLYN KIRK/AFP/AFP/Getty Images
Nick Kyrgios, left, beat Dustin Brown in a short five-setter. It lasted two hours, five minutes. JUSTIN TALLIS/AFP/AFP/Getty Images