ATP Swiss Indoors results

Following are the results on the fourth day of the Swiss ATP Indoors on Thursday (prefix number denotes seeding):

Second round

1-Stan Wawrinka, Switzerland, bt Donald Young, United States, 7-6 (7/4), 6-7 (3/7), 6-4

4-Marin Cilic, Croatia, bt Pablo Carreno Busta, Spain, 6-0, 7-6 (7/4)

Marcel Granollers, Spain, bt 8-Jack Sock, United States, 6-3, 6-1

Gilles Muller, Luxemburg, bt Florian Mayer, Germany, 6-3, 6-2

Juan Martin del Potro, Argentina, bt 5-David Goffin, Belgium, 7-5, 6-3

Mischa Zverev, Germany, bt Guido Pella, Argentina, 6-4, 6-2

Endit