Dominic Thiem admitted he will miss the "high" of winning after his Grand Slam career came to an end at the US Open on Monday on the same Arthur Ashe court where he won his only major in 2020. The injury-plagued former world number three went down to a 6-4, 6-2, 6-2 defeat to American 13th seed Ben Shelton, his eighth first round exit at his last 10 Slams. Thiem had already announced his intention to retire from tennis on home ground in Vienna in October, giving up on his fruitless battle to fully recover from a persistent wrist injury.