Martin Damm (born 2003)
Martin Damm Jr. is an American professional tennis player. He has a career-high ATP singles ranking of world No. 173 achieved on 3 November 2025 and a doubles ranking of No. 303 achieved on 6 November 2023.
Career
2019-2021: Juniors
On the junior tour, Damm has a career high junior ranking of No. 3, achieved on 1 January 2021.In August 2019, Damm and his partner Toby Kodat won the USTA Boys 18s National Championships doubles title, earning the pair a wildcard entry into the doubles main draw of the 2019 US Open. Damm age 15 and fellow American Toby Kodat age 16 became the youngest men's doubles team to win a US Open match in the Open Era.
2022-2023: Major, Masters qualifying debuts
Damm received a wildcard into the qualifying draw of the 2022 Miami Open and the 2022 US Open.He also entered the qualifying competitions at the 2023 Miami Open, and at the 2023 US Open as a wildcard.
2024: Masters debut &; first win, top 175
In March, Damm was also awarded a main draw wildcard at the 2024 Miami Open for his Masters debut where he recorded his first ATP Tour and Masters level win over Zhizhen Zhang and 14th seed and compatriot Tommy Paul by retirement. As a result, he reached the top 175 in the rankings on 1 April 2024.2025: Major debut and first win
Ranked No. 431, Damm made his debut at the 2025 US Open, after making the main draw using a qualifying wildcard, and recorded his first major win over fellow American and wildcard Darwin Blanch.Personal life
Damm is the son of former Czech professional tennis player Martin Damm Sr. who reached world No. 5 in doubles. He has two other siblings.ATP Challenger and ITF Tour finals
Singles: 18 (7 titles, 11 runner-ups)
| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score | |||||||||||||||
| Loss | 0–1 | [2024 Oeiras Indoors II – Singles|] | Oeiras Indoors, Portugal | Challenger | Hard |  dts|Sep 2025Doubles: 9 (6 titles, 3 runner-ups)
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