Roger Federer made a successful return to the Western & Southern Open on Tuesday.
The day wasn't so great for Serena Williams.
Federer advanced to the third round with a 6-4, 6-4 victory against Peter Gojowczyk, and Williams was eliminated by eighth-seeded Petra Kvitova in a 6-3, 2-6, 6-3 second-round loss.
Federer and Williams were making their first appearance at the tournament since they each won the title in 2015. Williams opened with a straight-set victory against Daria Gavrilova.
After a first-round bye, Federer extended his Cincinnati winning streak to 11 matches since losing to Rafael Nadal in the 2013 quarterfinals.