NEW YORK (AP) — Second day results continue to pour in from the U.S. Open.

Five-time champ and seventh-seed Roger Federer made a successful rain-delayed debut winning his opening round match against Slovenia’s Grega Zemlja 6-3, 6-2, 7-5. The match was originally scheduled for Monday night.

Other first-round winners on the men’s side included Americans John Isner (IHZ’-nur) and Sam Querrey (KWEER’-ee) and fifth-seed Tomas Berdych (TOH’-mahs bur-DEEK’) .

Fourth-seed Sara Errani charged into round 2 with a 6-love, 6-love win over Olivia Rogowska in 51 minutes.

Other first round winners included fifth-seed Caroline Wozniacki (wohz-nee-AK’-ee), seventh-seeded Petra Kvitova (kuh-VIHT’-oh-vuh, tenth-seed Roberta Vinci and unseeded Americans Christina McHale, Alison Riske, Sachia Vickery and Victoria Duval who beat 11th-seed Sam Stosur (STOH’-sur), 5-7, 6-4, 6-4.