![FILE - Novak Djokovic of Serbia, left, talks with chair umpire Jake Garner of the U.S. as he plays Andy Murray of Britain during the men's singles final at the Australian Open FILE - Novak Djokovic of Serbia, left, talks with chair umpire Jake Garner of the U.S. as he plays Andy Murray of Britain during the men's singles final at the Australian Open](https://c8.alamy.com/comp/2RGFT47/file-novak-djokovic-of-serbia-left-talks-with-chair-umpire-jake-garner-of-the-us-as-he-plays-andy-murray-of-britain-during-the-mens-singles-final-at-the-australian-open-tennis-championship-in-melbourne-australia-sunday-feb-1-2015-video-review-for-double-bounces-and-certain-other-rulings-will-be-making-its-grand-slam-tennis-debut-when-main-draw-competition-begins-at-the-us-open-later-this-month-new-us-open-tournament-referee-jake-garner-recalls-when-he-was-a-chair-umpire-and-it-was-too-tough-to-tell-in-the-moment-whether-a-ball-bounced-twice-before-a-player-got-it-back-over-th-2RGFT47.jpg)
FILE - Novak Djokovic of Serbia, left, talks with chair umpire Jake Garner of the U.S. as he plays Andy Murray of Britain during the men's singles final at the Australian Open
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Djokovic overcomes stubborn Lopez - Official Site of the 2023 US Open Tennis Championships - A USTA Event
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Five Things to Watch: Day 7 at the 2021 US Open - Official Site of the 2024 US Open Tennis Championships - A USTA Event
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Djokovic, under the radar, flies into men's singles final - Official Site of the 2024 US Open Tennis Championships - A USTA Event
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Federer solves Isner, set for another quarterfinal - Official Site of the 2023 US Open Tennis Championships - A USTA Event
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Qualifier Kontaveit shows quality in first US Open - Official Site of the 2023 US Open Tennis Championships - A USTA Event
![US Open Tennis on X: "Keys takes the lead! She captures the first set 6-1. https://t.co/rdMF99ca4o" / X US Open Tennis on X: "Keys takes the lead! She captures the first set 6-1. https://t.co/rdMF99ca4o" / X](https://pbs.twimg.com/media/F5YYYk4X0AAFxpz.jpg:large)