WINSTON-SALEM, N.C. -- The biggest news at a soggy Winston-Salem Open on Monday wasn't made by who advanced. It was who pulled out.
But the day's big story was the withdrawals of the two players who met in last year's final: Isner pulled out with a hip injury, and Berdych withdrew with right shoulder pain. Isner beat Berdych in last year's championship match.
Both players said they wanted to be healthy for the U.S. Open, which begins next week.
That leaves the tournament without its two highest-ranked players, and perhaps its biggest draws.
Isner, a Greensboro native, considers this his hometown tournament and called it "one of my favorite tournaments of the year." He won this event in each of its first two years of existence.
He withdrew one day after falling to Rafael Nadal in the Western & Southern Open final in Cincinnati. Injuries kept him from playing two other majors -- the Australian Open and Wimbledon.
Berdych moved up one spot to fifth in the ATP rankings released Monday. Isner jumped eight spots to No. 14.
The highest-ranked player remaining in the field is fourth-seeded Tommy Robredo of Spain at No. 22.
Also in the first round, qualifier Steve Johnson beat fellow American Bobby Reynolds 6-1, 6-2, and German David Goffin advanced when American Jack Sock withdrew in the third set with Goffin leading 4-6, 6-3, 1-0.
Roberto Bautista Agut of Spain defeated Danish qualifier Frederik Nielsen 6-1, 6-3. Qualifier Thiemo de Bakker beat Igor Sijsling 3-6, 6-4, 6-4 in a matchup of players from the Netherlands; and Nicolas Mahut of France topped Poland's Lukasz Kubot 6-3, 6-1.
Three seeded players had second-round matches later Monday night with the rest playing Tuesday.
Copyright 2013 by The Associated Press
MORE TENNIS HEADLINES
- Federer-Wawrinka move on in doubles play
- Radwanska reaches Round 3 at Indian Wells
- Retired player Baltacha, 30, fighting liver cancer
- Murray says back feeling better after surgery
MOST SENT STORIES ON ESPN.COM