NEW YORK — Roger Federer easily won his delayed first match at the U.S. Open on Tuesday, also marking his first Grand Slam victory since losing in the second round at Wimbledon.
The Swiss great needed just 93 minutes to beat Grega Zemlja in straight sets. Federer defeated the 62nd-ranked Slovenian 6-3, 6-2, 7-5 in a matchup postponed from Monday night because of rain.
He had 12 aces and 35 winners and won 20 of 21 points at the net.
The 17-time major champion is seeded seventh this year, his worst placement since 2002.
"I decided to play aggressive," Federer said. "By doing that, didn't have many rallies. It was more of a serving contest. So there wasn't much rhythm out there, but I was happy the way I played."
Jerzy Janowicz, who reached the semifinals at Wimbledon, was done in straight sets, too. But his U.S. Open is over.
The 14th-seeded Pole felt as if a knife were stabbing him in his right side every time he tried to serve. After hurting his lower back Saturday, he lost 6-4, 6-4, 6-2 to qualifier Maximo Gonzalez.
Ranked 247th, the 30-year-old Argentine hadn't won a main draw match on the ATP Tour since April 2011.
"I couldn't jump," Janowicz said. "I couldn't make a service movement. It's still better than yesterday."
He had a painkiller injection Monday, which allowed him to rotate so he could hit his backhand. But he described his serve during his match as "a push." At one point in the third set, he even tried one underhand.
Janowicz took an injury timeout in the second set for a trainer to massage his back.