More than 750,000 tennis fans will pour into Flushing, Queens over the next two weeks for the 2022 U.S. Open.

Tennis enthusiasts, young and old, from near and far began streaming into the arena Monday afternoon, hoping to catch a glimpse of their favorite tennis idols in action.

The big drama begins Monday at the Billie Jean King National Tennis Center, when Serena Williams, who indicated earlier this month she soon plans to end her tennis career, faces off against Montenegrin player Danka Kovinić at 7 p.m. in the Arthur Ashe Stadium.

Seeing Williams play, potentially for the last time, was a bittersweet draw for many attendees entering the stadium.

"Maybe it could be her last match. It's sad but I'm also excited for her to go out and venture out and do other things that she loves," said Thevuni Athalage, who's come to the U.S. Open from her home in New Jersey nearly every year for more than a decade with her father, another tennis player and fan. "I just love the atmosphere and the intensity of the sport. Especially coming here too — it's great to be with a bunch of fans as well to really enjoy the sport."

Men’s and women’s doubles begin on Wednesday and Williams sisters Venus and Serena will play together for their first Grand Slam since the 2018 French Open. Their first match will be against the Czech-duo 37-year-old Lucie Hradecka and 17-year-old Linda Noskova.

Rising American star, 18-year-old Coco Gauff, was set to square off against French player Leolia Jeanjean in her first match at noon at the Arthur Ashe stadium Monday.

In men’s singles, three reigning champions will vie for the trophy: 2019 winner Rafael Nadal of Spain, 2020 winner Austrian Dominic Thiem, and 2021 champion Russian Daniil Medvedev. Nadal and Thiem have not played in the U.S. Open since their respective wins.

One all-star not appearing in this year’s open: Novak Djokovic who is barred from entering the U.S. after refusing to get a COVID-19 vaccination.

While many attendees hailed from the surrounding area, others had traveled from abroad or other cities. Tennis coach Jonathan Hart drove up to New York City from Atlanta with a busload of kids, ages 8 to 17, who play with the group Nationals Juniors Tennis & Learning.

"We think it's highly important that they see tennis at its highest level," Hart said. "We hope that that would motivate them to move their feet more, get their rackets back."

Women’s singles defending champion U.K. Emma Raducanu takes the court at 7 p.m. Tuesday against French player Alizé Cornet.

At a press conference Monday morning, city officials urged people traveling to the tournament to use mass transit to and from the stadiums.

Daniel Zausner, the Chief Operating Officer, with USTA National Tennis Center said they were expecting expecting even larger crowds than 2019, ahead of the pandemic.

"The ticket sales were off the charts before Serena's announcement and it really just went to a whole new level," he said. "Fans in New York City, they want to be out they want to enjoy the U.S. Open and they want to end the summer on a high note and it feels incredibly special."

Matches run through mid-September with the Men’s and Women’s Finals scheduled for Sept. 11th.