ATP Boss Open 2021 Draw, Results & Schedule

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Marin Cilic won the 2021 Boss Open, defeating Felix Auger-Aliassime 7-6(2) 6-3 in the final. The ATP 250 event was played on grass courts in Stuttgart, Germany, from June 8 to June 13, 2021.

Champion
Marin Cilic
def. Felix Auger-Aliassime , 7-6(2) 6-3
Dates
Jun 8 — Jun 13
Location
Stuttgart, Germany
Category
ATP 250
Surface
Grass
Prize money
€543,210
News: Majchrzak beats three top-10 players in a row to win a maiden title in ‘s-Hertogenbosch (Tennis Majors, 34d ago, 4 sources)
Round of 32
Marin Cilic #47 7-5 6-3
Rudolf Molleker #262
Nikoloz Basilashvili #31 6-3 7-6(4)
Dustin Brown #303
Denis Shapovalov #14
BYE
Feliciano Lopez #62 6-4 6-4
Alexei Popyrin #63
Jurij Rodionov #142 2-6 6-3 6-2
Dominik Koepfer #59
Peter Gojowczyk #134 5-7 6-4 6-2
Ilya Ivashka #90
Alex de Minaur #22
BYE
Jordan Thompson #64 6-3 6-4
Guido Pella #61
Felix Auger-Aliassime #21
BYE
Lloyd Harris #54 6-4 7-5
Gilles Simon #69
Ugo Humbert #32 6-3 6-1
Marton Fucsovics #44
Yannick Hanfmann #96 6-4 6-4
Jeremy Chardy #60
Sam Querrey #67 6-4 6-1
Altug Celikbilek #239
James Duckworth #101 6-3 6-2
Adrian Mannarino #36
Dominic Stricker #335 7-6(4) 7-6(5)
Radu Albot #89
Hubert Hurkacz #20
BYE
Round of 16
Marin Cilic #47 6-3 6-2
Nikoloz Basilashvili #31
Denis Shapovalov #14 6-2 6-7(2) 6-3
Feliciano Lopez #62
Jurij Rodionov #142 5-3 (ret.)
Peter Gojowczyk #134
Alex de Minaur #22 6-7(8) 6-3 6-4
Jordan Thompson #64
Felix Auger-Aliassime #21 6-3 7-6(4)
Lloyd Harris #54
Ugo Humbert #32 7-6(9) 6-2
Yannick Hanfmann #96
Sam Querrey #67 6-4 7-6(7)
James Duckworth #101
Dominic Stricker #335 7-6(5) 7-6(5)
Hubert Hurkacz #20
Quarterfinals
Marin Cilic #47 7-5 7-6(3)
Denis Shapovalov #14
Jurij Rodionov #142 3-6 6-3 7-6(4)
Alex de Minaur #22
Felix Auger-Aliassime #21 7-6(5) 7-6(8)
Ugo Humbert #32
Sam Querrey #67 6-7(4) 7-6(4) 6-3
Dominic Stricker #335
Semifinals
Marin Cilic #47 6-3 1-0 (ret.)
Jurij Rodionov #142
Felix Auger-Aliassime #21 6-4 7-5
Sam Querrey #67
Final
Marin Cilic #47 7-6(2) 6-3
Felix Auger-Aliassime #21

Most Titles

PlayerTitles
Rafael Nadal 3
Gustavo Kuerten 2
Martin Jaite 2
Matteo Berrettini 2
Thomas Muster 2

Recent Finals

SeasonSurfaceWinnerScoreRunner-upH2HMatch
2026 Grass Ben Shelton 6-4 2-6 6-4 Taylor Fritz H2H Match data
2025 Grass Taylor Fritz 6-3 7-6 Alexander Zverev H2H Match data
2024 Grass Jack Draper 3-6 7-6(5) 6-4 Matteo Berrettini H2H Match data
2023 Grass Frances Tiafoe 4-6 7-6(1) 7-6(8) Jan-Lennard Struff H2H Match data
2022 Grass Matteo Berrettini 6-4 5-7 6-3 Andy Murray H2H Match data

View full tournament history →

Related Tournaments

Other ATP 250 tournaments in 2021

Previous editions of Boss Open

Frequently Asked Questions

Where is Boss Open held?
Boss Open is held in Stuttgart, Germany.
Who won the most recent Boss Open?
The 2026 Boss Open was won by Ben Shelton 6-4 2-6 6-4.
Who has won the most Boss Open titles?
Rafael Nadal has won 3 Boss Open titles, the most by any player.
When was the first Boss Open played?
The first edition of Boss Open was held in 1978.
What surface is Boss Open played on?
Boss Open is played on grass courts.