Defending US Open Champion Novak Djokovic Retires After Dropping Two Sets Against Stan Wawrinka

Swiss 23rd seed and 2016 champion Wawrinka led Djokovic 6-4, 7-5, 2-1 when the Serb quit, having received treatment on his troublesome left shoulder before the start of the third set.

from Top Sports News- News18.com https://ift.tt/30OfZWg