NEW YORK (AP) — Much like for so many other folks, Serena Williams' last match at the U.S. Open was must-see TV for players still in the tournament, so Jessica Pegula and Petra Kvitova tuned in from their hotel rooms the night before their victories led off Saturday's schedule and set up a fourth-round showdown. “Of course I watched Serena. I'm like everyone else,” said Pegula, a 28-year-old American who is seeded No.