Shelton blasted an ace on match point to seal the win and avenge his five-set loss to Tiafoe at last year's U.S. Open as the 22-year-old continues to make strides in his breakout season.
Jannik Sinner bounced back from two sets down to beat Daniil Medvedev and win his maiden Grand Slam title.
Novak Djokovic stayed on course as he entered the Wimbledon quarterfinals on Monday.
Medvedev became only the fourth player in ATP history to beat the world's top three at the same tournament.
On Sunday, Rafael Nadal's extraordinary resilience was on full display as he closed out a marathon five-setter against World No 2 Daniil Medvedev.
Medvedev squandered a two-set lead against Nadal in their previous meeting in the Melbourne final in January, allowing the Spaniard to clinch his 21st Grand Slam title.
Daniil Medvedev fired Russia to victory in the $7.5 million ATP Cup with a dominant performance against Italy in Melbourne on Sunday.
Russia's Daniil Medvedev remarkably reached his ninth final of the season as he defeated Stefanos Tsitsipas 7-6(5), 7-5 at the Shanghai Masters on Saturday.
Alcaraz stops Zverev to set up semi-final of US Open champions
Monegasque Valentin Vacherot completed a fairytale run at the Shanghai Masters on Sunday, rallying from a set down to defeat his cousin, Frenchman Arthur Rinderknech, 4-6, 6-3, 6-3 in the final and secure his first ATP 1000 title.
'Welcome to #Wimbledon, Rohit Sharma,' the official Wimbledon X handle posted, sharing a picture of the cricketer who led India to the T20 World Cup title last fortnight.
Australian Bernard Tomic has been fined $15,000 after post-match comments saying he had been "bored" during his first round exit from Wimbledon and had faked injury.
Medvedev opened as the +225 favorite at BetMGM but has seen his odds lengthen slightly despite the absence of two of his top threats. He has had a rollercoaster 2022 since falling to Nadal in the Australian Open final.
Third-ranked Carlos Alcaraz recorded a 7-5, 6-2 win over seventh-seeded Karen Khachanov of Russia to advance to the semifinals of the China Open on Monday in Beijing.
Petra Kvitova overcame a sluggish start and 10 double faults to beat Madison Keys 6-7(6), 6-4, 6-3 on Saturday and advance to the final of the Cincinnati Open, where she will face Caroline Garcia, the first qualifier to reach the final of a WTA 1000 tournament.
After losing the first set, Medvedev changed his approach midway through the second set, the Russian going for broke with pretty much every shot, particularly on second serve.
Novak Djokovic eased into the last four with a commanding performance over Japan's Kei Nishikori but world number two Daniil Medvedev bowed out of the men's singles at the Tokyo Olympics.
Images from Day 10 of the 2022 Australian Open in Melbourne on Wednesday.
Amanda Anisimova of the United States won the Qatar Open for her third career title and first since 2022.
Jannik Sinner won his maiden Grand Slam title at the Australian Open on Sunday.
Images from Day 3 of the 2023 French Open at Roland Garros in Paris on Tuesday.
Jannik Sinner beat defending champion and Spanish second seed Carlos Alcaraz to win his first Wimbledon title.
Kiara looked stunning in a blue ensemble, while Sidharth exuded elegance in a white suit and tie.
Daniil Medvedev lost his world number one ranking after being defeated by Gael Monfils
Bulgarian Grigor Dimitrov defeated Alexander Zverev 6-4, 6-7(4), 6-4 in a thrilling contest on Friday to reach the Miami Open final, where he will face world number three Jannik Sinner.
Hubert Hurkacz showed his Wimbledon credentials on Sunday, hammering world number one Daniil Medvedev
Stars made their way to the Australian Open to cheer on Rafael Nadal.
Russia's Daniil Medvedev defeated Benoit Paire of France 6-3, 6-4 in the first round of the Abierto Mexicano tournament in Acapulco on Tuesday to get his quest for the world number one ranking off to a winning start.
Coco Gauff rallied from a break down in the final set to beat Swede Rebecca Peterson and reach the Indian Wells quarter-finals for the first time
Carlos Alcaraz said he thought the trio of teenagers who have lit up the first week of the Australian Open have the skills to play the game at the top level
IMAGES from Day 8 of the action at the US Open at USTA Billie Jean King National Tennis Center at Flushing Meadows in New York on Monday.
Alexander Zverev said his energy began to fade midway through his five-sets Australian Open semi-final loss to Daniil Medvedev
Norway's Casper Ruud won his first Masters 1000 title on Sunday, as he stormed to a 7-5, 3-6, 6-4 victory over fifth seed Jack Draper in the Madrid Open final with a gutsy performance that showcased his clay-court mettle.
The Wimbledon men's singles semi-finals take centre stage at the All England Club on Friday.
A summary of Sunday's action at the US Open.
Second seed Coco Gauff overcame early problems on serve to cruise past China's Wang Xinyu 6-3, 6-2, keeping her composure despite eight double faults in the first set to book a meeting with Ukraine's Dayana Yastremska in the third round.
Medvedev suffered a jarring early exit from the Canadian Masters last week but overcame some initial problems in a tricky tie against Shapovalov to edge both sets and book a meeting with American Fritz.
Lehecka struck eight aces and converted four of eight break chances to secure the first Top 3 win of his career.
Belgian third seed Elise Mertens dug deep to save 11 match points and battle past two-time winner Ekaterina Alexandrova to reach the Libema Open final.
Jannik Sinner overpowered American Taylor Fritz in the final to become the first Italian man to win the US Open singles title.