After breaking Fognini in the fourth game, Yuki raced to a 3-1 lead but had to battle out two breakpoints in the next game before comfortably serving out the set in the seventh game.
In the second set too, Yuki succeeded in getting the first break in the fifth game but was broken back. It was on serve at 5-5 when Fognini decided against continuing.
His next opponent would be either Canadian world number 32 Vasek Pospisil or Taipei's world number 66 Yen-Hsun Lu.
