WASHINGTON — Showing signs of returning to his old form, right down to the return winner on the last point, Andy Murray moved into the third round at the Citi Open by beating No. 4 seed Kyle Edmund 7-6 (4), 1-6, 6-4 on Wednesday for just his third victory since having hip surgery.
Murray is a three-time major champion and former No. 1 who was sidelined for 11 months because of his right hip. He missed the second half of 2017, had an operation in January, then returned to the tour briefly in June. One of his three matches that month was a loss on a grass court to Edmund, the Australian Open semifinalist who has supplanted Murray as Britain's highest-ranked man.
There is still work to be done by Murray, of course. He is ranked 832nd, has played only five matches in the past 12 months, and needed three sets for each of his victories in Washington's hard-court tuneup for the U.S. Open.
After a wayward second set against Edmund, Murray collected himself in the third, all the while barking at himself after miscues, as he is wont to do. He got the measure of Edmund's serves late, earning two break points at 4-3. Another arrived at 5-4, thanks to a defensive lob that drew a long overhead from Edmund, followed by a double-fault. That brought match point, and Murray pounded a cross-court winner of an 83 mph second serve, then let out a loud yell.
Earlier Wednesday, reigning U.S. Open champion Sloane Stephens continued her tendency for all-or-nothing showings at tournaments, losing 2-6, 6-4, 6-2 in the second round to 91st-ranked Andrea Petkovic.
Stephens was seeded No. 2 at a tournament she won in 2015 for her first WTA title. Now she'll want to get her game going in the right direction before she begins the defense of her first Grand Slam title on Aug. 27.
''Hopefully,'' Stephens said, ''some things connect in the next couple of weeks.''
Her best results this season were a runner-up finish at the French Open and a title at the Miami Open. But take away those tournaments, and the American is 10-11 in 2018, including first-round exits at Wimbledon last month and the Australian Open in January.
Against Petkovic, Stephens put only 59 percent of her first serves in play and was broken four times.
Stephens' loss leaves the Citi Open women's draw without either of its top two seeds; No. 1 Caroline Wozniacki withdrew Tuesday because of a leg injury.
In men's action, 13th-seeded Frances Tiafoe picked up his first victory at his hometown ATP tournament, beating 120th-ranked Hubert Hurkacz of Poland 6-2, 6-4 with the help of 10 aces. Tiafoe, a 20-year-old who grew up in nearby Hyatsville, Maryland, called his performance ''nice, quick, efficient.''
He showed up to his postmatch news conference wearing a red T-shirt with the words, ''Rep your city,'' after needing just 75 minutes to win in front of a crowd that included his parents, brother and ''couple aunts, couple uncles.''
Tiafoe entered the day 0-2 at the Citi Open.
In other action, another local player, Denis Kudla of Arlington, Virginia, eliminated No. 12 seed Karen Khachanov of Russia 6-2, 6-3; No. 14 Jeremy Chardy was beaten 6-4, 6-4 by Marius Copil; No. 9 Denis Shapovalov defeated Daniil Medvedev 3-6, 6-1, 6-4; and No. 10 Stefanos Tsitsipas beat Jared Donaldson 3-6, 6-3, 7-5.
No. 15 Mischa Zverev of Germany moved into the third round by defeating Tim Smyczek of the U.S. 6-2, 7-6 (7). Zverev's next match could be against his younger brother, No. 1 seed and defending champion Alexander. It would be their first main-draw meeting on the ATP tour. Alexander Zverev was scheduled to resume his match against Malek Jaziri later Wednesday; it was suspended because of rain Tuesday night after Zverev took the first set 6-2.
No. 5 seed Nick Kyrgios withdrew because of an injured left hip.