Daniel Michalski (; born 11 January 2000) is a Polish tennis player. He has a career high ATP singles ranking of No. 241 achieved on 9 February 2026 and a doubles ranking of No. 499 achieved on 8 March 2021. Michalski represents Poland at the Davis Cup, where he has a W/L record of 1–0, and the 2026 United Cup.
In 2018, Michalski made his debut for the Polish tennis team in a Davis Cup match, where Poland won 4–1 against Zimbabwe. In 2019, he reached the final of the Polish Singles Championship, losing against Paweł Ciaś 4-6, 4-6. One year later, Michalski won the silver medal at the same tournament, losing against Kacper Żuk 6–7 in the final. In 2022, he became the Polish Singles Champion, defeating Jan Zieliński 6–2 in the final.
ATP Challenger and ITF Tour finals Singles: 29 (18–11) LegendATP Challenger Tour (0–1)ITF World Tennis Tour (18–10)Finals by surfaceHard (0–2)Clay (18–9)Grass (0–0)Carpet (0–0)
ResultW–LDateTournamentTierSurfaceOpponentScoreLoss0–1M15, Sharm el-Sheikh, Egypt World Tennis TourHard Lukáš Klein2–6, 3–6Loss0–2M25, Bydgoszcz, Poland World Tennis TourClay Nicolás Álvarez5–7, 3–6Win1–2M15, Cairo, Egypt World Tennis TourClay Matthieu Perchicot6–2, 7–6(7–3)Win2–2M15, Cairo, Egypt World Tennis TourClay Facundo Juarez6–4, 6–3Loss2–3M15, Monastir, TunisiaWorld Tennis TourHard Laurynas Grigelis7–5, 5–7, 6–7(8–10)Loss2–4M15, Antalya, Turkey World Tennis TourClay Miljan Zekić6–7(6–8), 3–6Loss2–5M15, Cairo, Egypt World Tennis TourClay Oliver Crawford2–6, 7–5, 3–6Win3–5M15, Antalya, Turkey World Tennis TourClay David Ionel6–3, 6–4Win4–5M15, Antalya, Turkey World Tennis TourClay Billy Harris2-6, 6–1, 6-3Win5–5M15, Antalya, Turkey World Tennis TourClay Cezar Crețu7-6(7-2), 6-2Win6–5M15, Cairo, EgyptWorld Tennis TourClay Andrey Chepelev7-6(7-3), 6-2Win7–5M15, Cairo, EgyptWorld Tennis TourClay David Pichler6-4, 6-3Loss7–6Zadar, CroatiaChallengerClay Flavio Cobolli4-6, 2-6Win8–6M25, Santa Margherita di Pula, ItalyWorld Tennis TourClay Timo Stodder7-6(7-0), 6-3Win9–6M25, Santa Margherita di Pula, ItalyWorld Tennis TourClay Timo Legout6-4, 6-3Loss9–7M25, Santa Margherita di Pula, ItalyWorld Tennis TourClay Gonçalo Oliveira3-6, 2-6Win10–7M25, Santa Margherita di Pula, ItalyWorld Tennis TourClay Sebastian Fanselow6-1, 6-2Win11–7M25, Santa Margherita di Pula, ItalyWorld Tennis TourClay Federico Arnaboldi2-6, 6-4, 6-2Loss11–8M25, Santa Margherita di Pula, ItalyWorld Tennis TourClay Oriol Roca Batalla6–2, 1–6, 4–6Win12–8M25, Poznań, PolandWorld Tennis TourClay Michael Vrbensky5–7, 6–4, 6–4Win13–8M25, Santa Margherita di Pula, ItalyWorld Tennis TourClay Niccolo Catini6–0, 6–4Win14–8M25, Antalya, TurkeyWorld Tennis TourClay Zdeněk Kolář7–6(7–5), 6–1Loss14–9M25, Antalya, TurkeyWorld Tennis TourClay Luka Mikrut2–6, 5–7Loss14–10M25, Santa Margherita di Pula, ItalyWorld Tennis TourClay Jacopo Berrettini1–6, 5–7Win15–10M25, Santa Margherita di Pula, ItalyWorld Tennis TourClay Michele Ribecai6–3, 7–5Loss15–11M25, Santa Margherita di Pula, ItalyWorld Tennis TourClay Felix Gill6–7(5–7), 5–7Win16–11M15, Kraków, PolandWorld Tennis TourClay Michael Agwi6–2, 3–0 ret.Win17–11M25, Poznán, PolandWorld Tennis TourClay Michael Savano6–2, 6–1Win18–11M25, Santa Margherita di Pula, ItalyWorld Tennis TourClay Laurent Lokoli7–6(7–5), 6–2
Doubles: 11 (5–6) LegendATP Challenger Tour (0–0)ITF World Tennis Tour (5–6)Finals by surfaceHard (2–3)Clay (3–3)Grass (0–0)Carpet (0–0)
ResultW–LDateTournamentTierSurfacePartnerOpponentsScoreLoss0–1 Sharm el-Sheikh, Egypt M15World Tennis TourHard David Poljak Andrés Artuñedo Pablo Vivero González4–6, 4–6Loss0–2 Sharm el-Sheikh, Egypt M15World Tennis TourHard Kacper Żuk Marat Deviatiarov Jakub Paul3–6, 4–6Win1–2 Sharm el-Sheikh, Egypt M15World Tennis TourHard Michal Dembek Marek Jaloviec Lukáš Klein6–2, 3–6, [10–8]Loss1–3 Tabarka, Tunisia M15World Tennis TourClay Kacper Żuk Toby Martin Barnaby Smith7–5, 1–6, [8–10]Loss1–4 Sharm el-Sheikh, Egypt M15World Tennis TourHard Piotr Matuszewski Julien Cash Jan Zieliński6–7(2–7), 6–7(3–7)Loss1–5 Cairo, Egypt M15World Tennis TourClay Piotr Matuszewski Fabrizio Ornago Matias Zukas2–3 RETWin2–5 Antalya, Turkey M15World Tennis TourClay Michael Vrbenský Max Houkes David Jordà Sanchis6–1, 2–6, [12–10]Win3–5 Monastir, Tunisia M15World Tennis TourClay Marco Bortolotti Facundo Juarez Gabriel Roveri Sidney4–6, 6–2, [10–6]Win4–5 Monastir, Tunisia M15World Tennis TourHard Carlos Sánchez Jover Konstantin Schmitz Kai Wehnelt6–4, 7–5Win5–5 Antalya, Turkey M15World Tennis TourClay Gergely Madarász Mircea-Alexandru Jecan Dan Alexandru Tomescu6–4, 6–3Loss5–6 Cairo, Egypt M15World Tennis TourClay Benjamin Lock Ray Ho Grigoriy Lomakin6–7(2–7), 6–7(3–7)
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