Sunday's final was an intense contest as nerves played their part, with 10 of the 22 games going against serve.
While the 19th seed Latvian may be disappointed with the outcome, Sevastovoa said she left her first Grand Slam semi-final with a sense of accomplishment.
Sania-Martina will next face ninth seeds Yung-Jan Chan and Hao-Ching Chan of Chinese Taipei, who rallied to beat unseeded Romanians Irina-Camelia Begu and Raluca Olaru 5-7, 6-1, 7-6 (4).
Images from Day 8 of the 2021 US Open in New York on Monday.
The Citi Open in Washington, which was scheduled to restart the men's ATP Tour after the COVID-19 shutdown, has been cancelled for 2020, organisers announced on Tuesday. The tournament was set to begin on August 14 and serve as a build-up for the US Open but the organisers said concerns about travel restrictions and recent trends in the coronavirus outbreak had led to the decision to scrap the event.
India's Leander Paes and Purav Raja sailed into the men's doubles second round in the duo's first outing at a Grand Slam but Sania Mirza and Rohan Bopanna crashed out of their respective events in the US Open.
In winning his third New York crown, he joined 14-times Grand Slam winner Pete Sampras in third on the all-time list, trailing only Roger Federer (20) and Rafael Nadal (17).
Simona Halep and Stan Wawrinka beat the heat with straight-sets wins to reach the third round of a sweltering US Open on Thursday while American hope Jack Sock wilted under the punishing conditions, collapsing on court.
The top seed can expect a tougher test against the fast-rising Indian.
A round-up of Day 11 at the final Grand Slam of the year.
The duo will take on Dominik Hrbaty of Slovakia and Andre Sa of Brazil in the first round.
The Wimbledon junior doubles champ will us the Canadian Open, a Grade 1 junior event, to prepare for the tournament.
Osaka threw her racket, slammed a ball into the court and gave her racket a kick for good measure before steadying the ship
Federer and Nadal had both opted out of this year's tournament, while Djokovic exited in the fourth round after an infamous swat of his racket sent a tennis ball into a line judge's neck.
Indian tennis stars Leander Paes, Sania Mirza and Rohan Bopanna made a rampaging start to their campaign at US Open as they advanced to the second round of the US Open along with their respective partners after notching up contrasting wins at Flushing Meadows, in New York.
Croatian Borna Coric saved six match points as he rallied from 5-1 down in the fourth set to stun Stefanos Tsitsipas 6-7(2), 6-4, 4-6, 7-5, 7-6(4) and send the fourth seed tumbling out of the US Open in the third round on Friday.
The French Tennis Federation has welcomed the decision of a French tribunal to lift the suspension of plans to expand Roland Garros, the home of the French Open tournament.
World number one Novak Djokovic has disclosed that his sudden slump in form was due to ' private issues' and not because of a lingering wrist injury.
Kim Clijsters and Venus Williams fell at the first hurdle
India's Sania Mirza and her partner Cara Black of Zimbabwe could not make it to the US Open women's doubles finals after going down in straight sets to Swiss-Italian pair of Martina Hingis and Flavia Pennetta at the Flushing Meadows.
'I am playing tennis because I love to play tennis'
Andreescu's win over Bencic also meant she became the first Canadian woman to make the US Open final, where she faces Serena Williams, who is chasing a record-equalling 24th Grand Slam single title.
Rafael Nadal's decision to skip the US Open because of health concerns has added another twist to the intriguing three-way battle for the most career men's Grand Slam titles and, in many eyes, the title of Greatest Of All Time (GOAT). Had the 34-year-old Spaniard managed to retain the title he won in a five-set thriller against Daniil Medvedev last year, he would have joined Roger Federer at the top of the list with 20 titles. Instead, his decision has cleared the path for 33-year-old Novak Djokovic to edge to within one of Nadal's Grand Slam tally with a fourth title at Flushing Meadows and 18 in total.
Both men are 31 years old but have little else in common.
Venus Williams will take on compatriot Sloane Stephens in one semi-final before her fellow Americans Madison Keys battles it out with CoCo Vandeweghe in the other in all-American semi-final in the women's singles at the US Open.
Defending champion Naomi Osaka of Japan was upset 7-5, 6-4 by Belinda Bencic in the fourth round at the US Open on Monday as the Swiss reached the quarter-finals for the second time.
Andre Agassi and Andy Roddick stayed on course for an all-American U.S. Open final.
In a rematch of their tumultuous 2018 US Open decider, Osaka underlined her status as the new queen of women's tennis and soaked up the cheers from the Rod Laver Arena crowd as fans returned to the Grand Slam after a five-day lockdown.
'It's a tough loss, but it was obviously a great experience' 'I'd love to build on these two weeks'
Maria Sharapova will be back in the US Open spotlight on Wednesday hoping she can come up with a winning encore to her electrifying first round victory over second seed Simona Halep.
Maria Sharapova's mix of grit and power were enough to see off American teenager Sofia Kenin 7-5, 6-2 in the third round of the US Open on Friday.
Following is a list of biggest shocks in women's tennis after Italian outsider Roberta Vinci, ranked 43rd, beat world number one Serena Williams in the US Open semi-finals on Friday to deny the American a chance to complete a calendar year Grand Slam.
Defending champion Marin Cilic and unseeded Roberta Vinci were the first through to the quarter-finals of the US Open in New York, on Tuesday, and both needed to go the distance against tough French resistance.
Wimbledon was scrapped for the first time since World War Two on Wednesday due to the coronavirus pandemic, with the suspension of professional tennis extended to July 13. The 38-year-old Federer is well insulated from the shutdown's financial fallout it could well impact his hopes of adding to his record haul of 20 Grand Slam titles.
Former U.S. Open champion Samantha Stosur has turned to Andy Murray's former coach Miles Maclagan to help reverse her slide down the world rankings, Tennis Australia said on Thursday.
'I'm not thinking ahead to the Open right now because I am here in Toronto and I haven't really played a hard court match in awhile. I'm thinking I want to get some of this under my belt and the Open will happen when the Open happens.'