The Latest: Djokovic starts Slam bid at US Open with victory

NEW YORK (AP) — The Latest on the U.S. Open tennis tournament (all times local):

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9:40 p.m.

Novak Djokovic has started his bid to make history at the U.S. Open with a four-set victory over Danish teenager Holger Vitus Nodskov Rune.

The top-seeded Djokovic is trying to complete the first calendar-year Grand Slam in men's tennis since 1969 and collect a record-breaking 21st major singles championship.

Djokovic was not perfect but he didn't need to be. He won 6-1, 6-7 (5), 6-2, 6-1 to get to the second round.

Rune is an 18-year-old who is ranked 145th and qualified at Flushing Meadows.

Rune started having problems with cramps in the third set.

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8:45 p.m.

Novak Djokovic is tied at 1-1 after losing a second-set tiebreaker in his opening match.

Djokovic started fast against Danish qualifier Holder Rune, winning the first set 6-1 in 26 minutes. But Rune broke the No. 1 seed's serve en route to a 3-0 lead in the second.

Djokovic fought back to force the tiebreaker but Rune won it 7-5.

Djokovic is trying to become the first man to win all four Grand Slam tournaments in one year since 1969.

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6:15 p.m.

Maxime Cressy defeated ninth-seeded and Olympic bronze medalist Pablo Carreno Busta 5-7, 4-6, 6-1, 6-4, 7-6 (7) in the biggest early upset at the U.S. Open.

Cressy saved four match points in the fifth-set tiebreaker to knock off the two-time U.S. Open semifinalist. He had fans chanting "Cressy! Cressy!" as they rallied behind the Open qualifier.

The French-born Cressy was a collegiate star at UCLA and used a big serve to slam 46 aces and advance into the second round. Down 5-2 in the deciding tiebreaker, the 24-year-old pulled off the biggest win of his pro career.

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4 p.m.

Women's No. 1 seed Ash Barty knocked off Vera Zvonareva 6-1, 7-6 (7) in her first U.S. Open match in two years.

The reigning Wimbledon champion, Barty skipped last year's open because of the pandemic. Barty's Grand Slam titles at Wimbledon and at the 2019 French Open came on grass and clay. She's trying to make a major breakthrough on hard courts.

The 25-year-old Barty shook off a lull in the second set and won in a

sensational tiebreak. She finished with 31 winners, including 11 aces.

Zvonareva was the 2010 U.S. Open runner-up.

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2:05 p.m.

Alexander Zverev opened his bid for a second straight U.S. Open final appearance with a win in his opening match.

Zverev needed only 1 hour, 40 minutes to beat Sam Querrey 6-4, 7-5, 6-2.

Zverev won the first two sets last year in the final against Dominic Thiem before losing the match. It was Zverev's first Slam final.

Zverev won the gold medal at the Tokyo Olympics and is one of three players with four titles this season.

He's won 12 straight matches.

The German knocked off top-ranked Novak Djokovic in the semifinals of the Tokyo Games. Djokovic is trying to become the first man since 1969 to win a calendar-year Grand Slam. He plays Tuesday night.

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1:40 p.m.

Karolina Pliskova and Reilly Opelka were among the early winners on the second day of the U.S. Open.

Pliskova, a 2016 finalist, beat Caty McNally 6-3, 6-4 in her first-round match as the former world No. 1 tries continues her rebound from several lean years on the tour. Pliskova lost the Wimbledon final this year and fell to 0-2 in major finals.

Reilly Opelka, one of 15 Americans playing in bottom half of the draw on Tuesday, defeated Soonwoo Kown 7-6 (7), 6-4, 6-4.

Mackenzie McDonald, another American, beat David Goffin 6-2, 7-5, 6-3. McDonald needed surgery for a torn hamstring tendon a little more than two years ago and couldn't walk for weeks. He lost the Citi Open final in August in Washington.

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11:15 a.m.

The second day of the U.S. Open is underway and the No. 1 seeds in both draws are set to compete.

Novak Djokovic opens his bid to become the first man since 1969 to win a calendar-year Grand Slam when he plays 18-year-old qualifier Holger Vitus Nodskov Rune of Denmark in the first match of the night session in Arthur Ashe Stadium. Djokovic would break a tie with Roger Federer and Rafael Nadal for most major titles among men if he wins the tournament. They all have 20.

Djokovic is 15-0 in the first round at the U.S. Open and has won eight of the last 12 Grand Slam tournaments.

Women's No. 1 seed Ash Barty faces Vera Zvonareva, the 2010 U.S. Open runner-up, on Ashe in an afternoon match.

Andy Murray was still hot a day after he lost to Stefanos Tsitsipas in the opening round. Murray said after the match that he "lost respect" for Tsitsipas for pushing the boundaries when it comes to taking breaks during a match. Murray

tweeted on Tuesday that it takes Tsitsipas "twice as long to go the bathroom as it takes Jeff (Bezos) to fly into space."

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