Sebastian Korda won the battle of the young Americans to reach his first ATP Masters 1000 semi-final.
Tennis phenom Carlos Alcaraz has not yet dissected his surprise loss to Grigor Dimitrov in the Round of 16 at the Rolex Shanghai Masters but has vowed to learn from it.
World number two Carlos Alcaraz suffered his earliest exit to a tournament since May when he was beaten 5-7 6-2 6-4 by Grigor Dimitrov in the Shanghai Masters.
Ben Shelton ended Jannik Sinner's winning run with a 2-6 6-3 7-6 (5) victory to reach the quarter-finals of an ATP Masters 1000 tournament for the first time at the Shanghai Masters.
Dan Evans gave Carlos Alcaraz a real test in a terrific clash at the Shanghai Masters before the top seed booked his spot in round four with a 7-6 (1) 6-4 victory.
American Sebastian Korda defeated an in-form Daniil Medvedev 7-6 (10/8), 6-2 on Sunday to eliminate the defending champion in the Shanghai Masters second round.