| Singles | |
|---|---|
| 2017 Torneo Internacional Challenger León | |
| Champion |  Adrián Menéndez Maceiras |
| Runner-up |  Roberto Quiroz |
| Score | 6–4, 3–6, 6–3 |
Michael Berrer was the defending champion but chose not to defend his title.
Adrián Menéndez Maceiras won the title after defeating Roberto Quiroz 6–4, 3–6, 6–3 in the final.
Víctor Estrella Burgos (quarterfinals)
Ernesto Escobedo (second round)
Vasek Pospisil (quarterfinals) Stefan Kozlov (second round)
João Souza (second round) Tennys Sandgren (second round)
Teymuraz Gabashvili (quarterfinals)
Jason Jung (first round)| Semifinals | Final | ||||||||||||
| Q | Roberto Quiroz | 6 | 6 | ||||||||||
| Rajeev Ram | 4 | 3 | |||||||||||
| Q | Roberto Quiroz | 4 | 6 | 3 | |||||||||
| Q | Adrián Menéndez Maceiras | 6 | 3 | 6 | |||||||||
| Alt |  Nicolás Jarry | 5 | 4 | ||||||||||
| Q | Adrián Menéndez Maceiras | 7 | 6 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | V Estrella Burgos | 4 | 77 | 6 | |||||||||||||||||||||||
| D Novikov | 6 | 61 | 0 | 1 | V Estrella Burgos | 6 | 6 | ||||||||||||||||||||
| LL |  L Broady | 6 | 6 | LL | L Broady | 2 | 2 | ||||||||||||||||||||
| SE | D Shapovalov | 2 | 3 | 1 | V Estrella Burgos | 64 | 4 | ||||||||||||||||||||
 F Coria | 4 | 6 | 6 | Q | R Quiroz | 77 | 6 | ||||||||||||||||||||
| WC |  T Hank | 6 | 4 | 4 | F Coria | 5 | 1 | ||||||||||||||||||||
| Q | R Quiroz | 6 | 6 | Q | R Quiroz | 7 | 6 | ||||||||||||||||||||
| 8 | J Jung | 1 | 2 | Q | R Quiroz | 6 | 6 | ||||||||||||||||||||
| 4 | S Kozlov | 6 | 6 | R Ram | 4 | 3 | |||||||||||||||||||||
| Q |  D Petrović | 4 | 2 | 4 | S Kozlov | 1 | 64 | ||||||||||||||||||||
| R Ram | 6 | 2 | 6 | R Ram | 6 | 77 | |||||||||||||||||||||
| A Sarkissian | 3 | 6 | 4 | R Ram | 77 | 6 | |||||||||||||||||||||
 M Arévalo | 64 | 2 |  M Bašić | 62 | 3 | ||||||||||||||||||||||
| M Bašić | 77 | 6 | M Bašić | 6 | 3 | 78 | |||||||||||||||||||||
 I Sijsling | 4 | 4 | 5 | J Souza | 2 | 6 | 66 | ||||||||||||||||||||
| 5 | J Souza | 6 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 6 | T Sandgren | 2 | 77 | 6 | |||||||||||||||||||||||
| Alt | M McDonald | 6 | 62 | 3 | 6 | T Sandgren | 6 | 4 | 5 | ||||||||||||||||||
 M Safwat | 0 | 4 | Alt | N Jarry | 2 | 6 | 7 | ||||||||||||||||||||
| Alt | N Jarry | 6 | 6 | Alt | N Jarry | 3 | 7 | 77 | |||||||||||||||||||
| Q |  Y Hanfmann | 6 | 6 | 3 | V Pospisil | 6 | 5 | 62 | |||||||||||||||||||
 J-P Smith | 2 | 2 | Q | Y Hanfmann | 62 | 4 | |||||||||||||||||||||
 A Santillan | 3 | 6 | 65 | 3 | V Pospisil | 77 | 6 | ||||||||||||||||||||
| 3 | V Pospisil | 6 | 3 | 77 | Alt | N Jarry | 5 | 4 | |||||||||||||||||||
| 7 | T Gabashvili | 6 | 6 | Q | A Menéndez Maceiras | 7 | 6 | ||||||||||||||||||||
| WC | S González | 2 | 4 | 7 | T Gabashvili | 77 | 6 | ||||||||||||||||||||
| P Krstin | 4 | 4 | M Krueger | 61 | 4 | ||||||||||||||||||||||
| M Krueger | 6 | 6 | 7 | T Gabashvili | 77 | 4 | 3 | ||||||||||||||||||||
| WC | H Hach Verdugo | 6 | 4 | 5 | Q | A Menéndez Maceiras | 65 | 6 | 6 | ||||||||||||||||||
| Q | A Menéndez Maceiras | 4 | 6 | 7 | Q | A Menéndez Maceiras | 1 | 6 | 6 | ||||||||||||||||||
| WC | M Sánchez | 3 | 6 | 3 | 2 | E Escobedo | 6 | 3 | 3 | ||||||||||||||||||
| 2 | E Escobedo | 6 | 3 | 6 | |||||||||||||||||||||||
Jennifer Capriati defeated Martina Hingis in the final, 6–4, 6–3 to win the women's singles tennis title at the 2001 Australian Open. With the win, Capriati returned to the top 10 in rankings for the first time since 1993.
Defending champion Ivan Lendl successfully defended his title, defeating Mats Wilander in the final 7–5, 6–2, 3–6, 7–6(7–3) to win the men's singles tennis title at the 1987 French Open.
Rafael Nadal defeated Nicolas Kiefer in the final, 6–3, 6–2 to win the men's singles tennis title at the 2008 Canadian Open.
The 1999 Open Gaz de France singles was the singles event of the seventh edition of the Open GDF Suez; a WTA Tier II tournament held in Paris, France. Mary Pierce was the defending champion but did not compete that year.
Marin Čilić was the two-time defending champion; however, he was eliminated by Florian Mayer in the quarterfinals.
Ivan Dodig claimed the first ATP title of his career, by defeating Michael Berrer 6–3, 6–4 in the final match.
Juan Carlos Ferrero was the defending champion; however, he chose not to defend his title due to knee and wrist injuries.
Nicolás Almagro claimed the title by defeating Alexandr Dolgopolov 6–3, 7–6(3) in the final.
Michaël Llodra was the defending champion, but he lost in quarterfinals to Robin Söderling. Söderling reached the final, where he defeated Marin Čilić 6–7(8–10), 6–3, 6–3 to claim his third title of the year and ninth of his career.
Mikhail Youzhny was the defending champion, but lost to Philipp Petzschner in the second round.
7th seed Nikolay Davydenko defeated 5th seed Florian Mayer in the final 6–3, 3–6, 6–1 to win the title. It was Davydenko's first title since January 2010, and his 21st career title.
Andreas Seppi was the defending champion, but he lost in the quarterfinals to Robin Haase.
Robin Haase won the title, defeating Albert Montañés 6–4, 4–6, 6–1 in the final.
Roger Federer was the defending champion, but was forced to withdraw from the tournament before the semifinals because of a back injury. Following Federer's withdrawal, Stefan Edberg and Jo-Wilfried Tsonga played a one set exhibition match to make up the evening session.
Andy Roddick was the defending champion and successfully defended his title, defeating Nicolas Kiefer, 6–2, 6–3 in the final.
Jordi Arrese was the defending champion and successfully defended his title, beating Alberto Berasategui in the final, 6–4, 3–6, 6–3.
Nicolas Kiefer was the defending champion, but lost in the quarterfinals this year.
Chuck Adams was the defending champion, but lost in the quarterfinals this year.
Justine Henin-Hardenne defeated Nadia Petrova in the final, 6–3, 4–6, 6–3 to win the singles tennis title at the 2005 WTA German Open.
Bob and Mike Bryan were the defending champions and successfully defended the title, defeating Vasek Pospisil and Jack Sock in the final, 6–3, 6–2.
Jonas Björkman and Max Mirnyi were the defending champions and successfully defended their title, defeating Bob and Mike Bryan 3–6, 6–3, [10–7] in the final.
Patty Schnyder was the defending champion, but lost in quarterfinals to Lucie Šafářová.
Martina Hingis and Jamie Murray were the defending champions, but Hingis retired from professional tennis at the end of 2017. Murray successfully defended his title alongside Bethanie Mattek-Sands, defeating Alicja Rosolska and Nikola Mektić, 2–6, 6–3, [11–9] to win the mixed doubles tennis title at the 2018 US Open
Alexander Zverev defeated top seed Stefanos Tsitsipas in the final, 6–4, 7–6(7–3) to win the men's singles tennis title at the 2021 Mexican Open.