2021 Stockholm Open

Singles • Tommy Paul defeated Denis Shapovalov, 6–4, 2–6, 6–4 Paul won his first ATP Tour title. Doubles • Santiago González / Andrés Molteni defeated Aisam-ul-Haq Qureshi / Jean-Julien Rojer 6–2, 6–2. ==Singles main-draw entrants==

Seeds • Rankings were as of November 1, 2021 Other entrants The following players received wildcards into the singles main draw: • Leo Borg • Andy Murray • Elias Ymer The following players received entry from the qualifying draw: • Viktor Durasovic • Denis Istomin • Pavel Kotov • Andrea Vavassori The following players received entry as lucky losers: • Egor Gerasimov • Jozef Kovalík • Nino Serdarušić Withdrawals ;Before the tournament • Nikoloz Basilashvili → replaced by Tommy Paul • Alex de Minaur → replaced by Adrian Mannarino • Grigor Dimitrov → replaced by Arthur Rinderknech • Cristian Garín → replaced by Taylor Fritz • Ugo Humbert → replaced by Alejandro Davidovich Fokina • Hubert Hurkacz → replaced by Egor Gerasimov • Aslan Karatsev → replaced by Nino Serdarušić • Gaël Monfils → replaced by Márton Fucsovics • Cameron Norrie → replaced by Peter Gojowczyk • Casper Ruud → replaced by Mackenzie McDonald • Diego Schwartzman → replaced by Frances Tiafoe • Lorenzo Sonego → replaced by Jozef Kovalík • Alexander Zverev → replaced by Emil Ruusuvuori ==Doubles main-draw entrants==

Seeds • Rankings were as of November 1, 2021 Other entrants The following pairs received wildcards into the doubles main draw: • Markus Eriksson / Elias Ymer • André Göransson / Robert Lindstedt The following pairs received entry into the doubles main draw as alternates: • Karl Friberg / Mohamed Safwat • Simon Freund / Nino Serdarušić Withdrawals ;Before the tournament • Marcelo Arévalo / Santiago González → replaced by Santiago González / Andrés Molteni • Simone Bolelli / Máximo González → replaced by Tomislav Brkić / Nikola Ćaćić • Rohan Bopanna / Denis Shapovalov → replaced by Ariel Behar / Gonzalo Escobar • Sander Gillé / Joran Vliegen → replaced by Emil Ruusuvuori / Botic van de Zandschulp • Wesley Koolhof / Jean-Julien Rojer → replaced by Aisam-ul-Haq Qureshi / Jean-Julien Rojer • Raven Klaasen / Ben McLachlan → replaced by Fabrice Martin / Hugo Nys • Kevin Krawietz / Horia Tecău → replaced by Pedro Martínez / Andrea Vavassori • Jamie Murray / Bruno Soares → replaced by Taylor Fritz / Tommy Paul • John Peers / Filip Polášek → replaced by Karl Friberg / Mohamed Safwat • Tim Pütz / Michael Venus → replaced by Simon Freund / Nino Serdarušić ==References==