The Russian, down 6-7(6), 6-4, 1-5 against Frenchman Lucas Pouille, hit four consecutive aces. The game lasted 29 seconds.
After each ace, Medvedev did not towel off or walk to the back wall to inspect the balls.
Instead, he simply received another ball, turned to Pouille, bounced the ball a couple times and crushed another ace. Less than half of a minute later, he was walking to the chair and raising his racquet as the crowd cheered for one of the fastest service games in recent memory.
Pouille, however, advanced in Stuttgart 7-6(6), 4-6, 6-2 and will next face German Jan-Lennard Struff, who beat #NextGenATP Serbian Miomir Kecmanovic 6-2, 6-2. Pouille is going for his second Stuttgart title after winning the grass-court crown in 2017.