After a spotty first set that featured a combined five service breaks, including Gauff’s double fault on one game point, Gauff gained command over her Czech Republic opponent with a break in the eighth game.

Source: https://www.sudbury.com/national-sports/coco-gauff-19-earns-cincinnati-womens-title-by-beating-muchova-in-straight-sets-7432005

In the end the double fault was an unfortunate ending for him but I think I deserved it considering the effort and the fight I put in."

Source: https://www.channelnewsasia.com/sport/djokovic-beats-rublev-set-paris-final-dimitrov-3897776?cid=cna_flip_070214

Mmoh evened the tiebreak (first to seven points) at 5–5 with a booming serve Wolf returned way long, then gave it back with a double fault.

Source: https://spectator.org/j-j-wolf-and-michael-mmoh-duke-it-out/