WTA. Transylvania Open, Qualification |
24-10-2021 |
| 10:00 | 1.49 Lesley Kerkhove | 2.4 Seone Mendez | | + 12 12 |
| | | |
| 10:00 | 9.15 Vanessa Popa Teiusanu | 1.01 Alexandra Ignatik | | + 3 3 |
| | | |
ATP. St. Petersburg Open, Qualification |
24-10-2021 |
| 10:00 | 1.2 Miomir Kecmanovic | 3.88 Evgeny Karlovskiy | | + 8 8 |
| | | |
| 10:00 | 2.54 Federico Coria | 1.44 Radu Albot | | + 8 8 |
| | | |
WTA. VTB Kremlin Cup |
24-10-2021 |
| 11:00 | 3.2 Ekaterina Alexandrova | 1.28 Anett Kontaveit | | + 33 33 |
| | | |
Challenger. Losinj (mens) |
24-10-2021 |
| 11:00 | 1.82 Marco Cecchinato | 1.79 Carlos Taberner | | + 15 15 |
| | | |
WTA. Transylvania Open, Qualification |
24-10-2021 |
| 11:30 | 1.14 Aleksandra Krunic | 4.42 Yuriko Miyazaki | | + 12 12 |
| | | |
| 11:30 | 1.01 Anastasia Gasanova | 10.1 Briana Szabo | | + 5 5 |
| | | |
WTA. Courmayeur Ladies Open, Qualification |
24-10-2021 |
| 11:30 | 1.37 Ankita Raina | 2.78 Martina Di Giuseppe | | + 9 9 |
| | | |
| 11:30 | 2.76 Tara Moore | 1.37 Stephanie Wagner | | + 10 10 |
| | | |
ATP. St. Petersburg Open, Qualification |
24-10-2021 |
| 11:30 | 1.61 Roman Safiullin | 2.16 Yoshihito Nishioka | | + 10 10 |
| | | |
| 11:30 | 2.43 Damir Dzumhur | 1.48 Egor Gerasimov | | + 10 10 |
| | | |
ATP. VTB Kremlin Cup |
24-10-2021 |
| 13:00 | 1.84 Tomislav Brkic/Nikola Cacic | 1.8 Harri Helioevaara/Matwe Middelkoop | | + 15 15 |
| | | |
WTA. Transylvania Open, Qualification |
24-10-2021 |
| 13:00 | 1.48 Anna Bondar | 2.42 Jana Fett | | + 12 12 |
| | | |
| 13:00 | 1.14 Lesia Tsurenko | 4.58 Andreea Rosca | | + 10 10 |
| | | |
WTA. Courmayeur Ladies Open, Qualification |
24-10-2021 |
| 13:00 | 1.11 Cristina Bucsa | 5.06 Federica Rossi | | + 9 9 |
| | | |
| 13:00 | 1.1 Giulia Gatto-Monticone | 5.38 Oksana Kalashnikova | | + 7 7 |
| | | |
ATP. Erste Bank Open, Qualification |
24-10-2021 |
| 13:00 | 1.5 Dominik Koepfer | 2.36 Gianluca Mager | | + 12 12 |
| | | |
| 13:00 | 1.03 Frances Tiafoe | 7.8 Lucas Miedler | | + 10 10 |
| | | |
ATP. St. Petersburg Open, Qualification |
24-10-2021 |
| 13:00 | 3.1 Evgeny Donskoy | 1.3 Mikael Ymer | | + 10 10 |
| | | |
| 13:00 | 1.15 Botic van de Zandschulp | 4.44 Marc Polmans | | + 11 11 |
| | | |
ATP. European Open |
24-10-2021 |
| 14:00 | 1.89 Wesley Koolhof/Jean-Julien Rojer | 1.75 Nicolas Mahut/Fabrice Martin | | + 15 15 |
| | | |
WTA. Courmayeur Ladies Open, Qualification |
24-10-2021 |
| 14:30 | 1.27 Qinwen Zheng | 3.28 Urszula Radwanska | | + 7 7 |
| | | |
ATP. Erste Bank Open, Qualification |
24-10-2021 |
| 14:30 | 2.36 Norbert Gombos | 1.5 Alexei Popyrin | | + 10 10 |
| | | |
| 14:30 | 1.24 Kevin Anderson | 3.52 Roberto Carballes Baena | | + 12 12 |
| | | |
ATP. St. Petersburg Open, Qualification |
24-10-2021 |
| 14:30 | 1.53 Benjamin Bonzi | 2.31 Dmitry Popko | | + 8 8 |
| | | |
| 14:30 | 3.14 Gilles Simon | 1.29 Emil Ruusuvuori | | + 10 10 |
| | | |
ATP. VTB Kremlin Cup |
24-10-2021 |
| 15:00 | 2.13 Marin Cilic | 1.62 Aslan Karatsev | | + 34 34 |
| | | |
WTA. Courmayeur Ladies Open, Qualification |
24-10-2021 |
| 16:00 | 1.31 Aliona Bolsova | 3.06 Federica Di Sarra | | + 7 7 |
| | | |
ATP. European Open |
24-10-2021 |
| 16:30 | 1.37 Jannik Sinner | 2.76 Diego Schwartzman | | + 34 34 |
| | | |
WTA. Tenerife Ladies Open |
24-10-2021 |
| 17:00 | 2.38 Camila Osorio | 1.5 Ann Li | | + 35 35 |
| | | |
Challenger. Bogota (mens) |
24-10-2021 |
| 18:00 | 1.47 Gerald Melzer | 2.46 Facundo Mena | | |
| | | |
ATP. St. Petersburg Open |
25-10-2021 |
| 10:00 | 3.84 Laslo Djere | 1.2 Ilya Ivashka | | + 16 16 |
| | | |
| 10:00 | 2.58 Pedro Martinez | 1.43 Tommy Paul | | + 13 13 |
| | | |
| 10:00 | 1.09 Alexander Bublik | 5.55 Evgeny Tyurnev | | + 12 12 |
| | | |
| 10:00 | 1.82 Jan-Lennard Struff | 1.82 James Duckworth | | + 17 17 |
| | | |
| 10:00 | 5.48 Nino Serdarusic | 1.09 Sebastian Korda | | + 15 15 |
| | | |
| 10:00 | 1.26 Marin Cilic | 3.34 Albert Ramos-Vinolas | | + 14 14 |
| | | |
| 10:00 | 4.04 Adrian Mannarino | 1.18 Karen Khachanov | | + 16 16 |
| | | |
| 10:00 | 1.74 Federico Delbonis | 1.91 Pablo Andujar | | + 16 16 |
| | | |
| 10:00 | 1.06 John Millman | 6.55 Yshai Oliel | | + 15 15 |
| | | |
