| Men's singles | |
|---|---|
| 2018 Jinan International Open | |
| Champion |  Alexei Popyrin |
| Runner-up |  James Ward |
| Final score | 3–6, 6–1, 7–5 |
Lu Yen-hsun was the defending champion but chose not to defend his title.
Alexei Popyrin won the title after defeating James Ward 3–6, 6–1, 7–5 in the final.
Ramkumar Ramanathan (first round)
Henri Laaksonen (withdrew)
Nikola Milojević (first round)
Alexander Bublik (first round)
Tatsuma Ito (second round) Hiroki Moriya (first round) Peđa Krstin (first round, retired)
Yang Tsung-hua (second round)| Semifinals | Final | ||||||||||||
| Q | Alexei Popyrin | 6 | 3 | 6 | |||||||||
| WC |  Zhang Zhizhen | 4 | 6 | 1 | |||||||||
| Q | Alexei Popyrin | 3 | 6 | 7 | |||||||||
| James Ward | 6 | 1 | 5 | ||||||||||
| James Ward | 6 | 6 | |||||||||||
| WC | Xia Zihao | 2 | 1 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | R Ramanathan | 3 | 4 | ||||||||||||||||||||||||
 H Heliövaara | 6 | 6 | H Heliövaara | 2 | 4 | ||||||||||||||||||||||
| D Petrović | 4 | 2 | D Yevseyev | 6 | 6 | ||||||||||||||||||||||
| D Yevseyev | 6 | 6 | D Yevseyev | 3 | 6 | 3 | |||||||||||||||||||||
| Q | Y Bai | 3 | 5 | Q | A Popyrin | 6 | 3 | 6 | |||||||||||||||||||
| Q | A Popyrin | 6 | 7 | Q | A Popyrin | 4 | 77 | 7 | |||||||||||||||||||
| A Santillan | 4r | 8 | T-h Yang | 6 | 64 | 5 | |||||||||||||||||||||
| 8 | T-h Yang | 5 | Q | A Popyrin | 6 | 3 | 6 | ||||||||||||||||||||
| 4 | A Bublik | 6 | 3 | 64 | WC | Zh Zhang | 4 | 6 | 1 | ||||||||||||||||||
| Z Li | 4 | 6 | 77 | Z Li | 6 | 3 | 4 | ||||||||||||||||||||
| WC | X Gao | 5 | 0r | WC | Zh Zhang | 4 | 6 | 6 | |||||||||||||||||||
| WC | Zh Zhang | 7 | 2 | WC | Zh Zhang | 6 | 6 | ||||||||||||||||||||
 R Safiullin | 6 | 77 | R Safiullin | 4 | 4 | ||||||||||||||||||||||
| Renta Tokuda | 3 | 63 | R Safiullin | 79 | 7 | ||||||||||||||||||||||
| M Banes | 6 | 1 | 2 | 5 | T Ito | 67 | 5 | ||||||||||||||||||||
| 5 | T Ito | 3 | 6 | 6 | |||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 7 | P Krstin | 66 | 0r | ||||||||||||||||||||||||
| A Kadhe | 78 | 3 | A Kadhe | 3 | 1 | ||||||||||||||||||||||
| J Ward | 2 | 7 | 6 | J Ward | 6 | 6 | |||||||||||||||||||||
| WC | Y He | 6 | 5 | 1 | J Ward | 3 | 7 | 6 | |||||||||||||||||||
| Q | Manish Sureshkumar | 1 | 3 |  D-h Lee | 6 | 5 | 4 | ||||||||||||||||||||
| D-h Lee | 6 | 6 | D-h Lee | 6 | 6 | ||||||||||||||||||||||
| Y Wu | 6 | 6 | Y Wu | 0 | 3 | ||||||||||||||||||||||
| 3 | N Milojević | 3 | 4 | J Ward | 6 | 6 | |||||||||||||||||||||
| 6 | H Moriya | 3 | 4 | WC | Z Xia | 2 | 1 | ||||||||||||||||||||
| Ze Zhang | 6 | 6 | Ze Zhang | 6 | 6 | ||||||||||||||||||||||
| Y Takahashi | 6 | 6 | Y Takahashi | 4 | 3 | ||||||||||||||||||||||
| Hiroyasu Ehara | 4 | 3 | Ze Zhang | 4r | |||||||||||||||||||||||
| Q |  TK Wang | 5 | 63 | WC | Z Xia | 5 | |||||||||||||||||||||
| D Wu | 7 | 77 | D Wu | 4 | 2 | ||||||||||||||||||||||
| WC | Xia Zihao | 2 | 4 | WC | Z Xia | 6 | 6 | ||||||||||||||||||||
| LL | T-l Wu | 6 | 1r | ||||||||||||||||||||||||
Martina Navratilova and Bob Bryan were the defending champions, but Navratilova retired from the sport at the end of 2006. Bryan partnered Tatiana Golovin, and lost in the second round to Sania Mirza and Mahesh Bhupathi.
Two-time defending champion Rafael Nadal successfully defended his title, defeating Roger Federer in a rematch of the previous year's final 6–4, 6–4, to win the singles title at the 2007 Monte-Carlo Masters.
Defending champion Rafael Nadal successfully defended his title, defeating Roger Federer in the final 6–2, 6–7(2–7), 6–3, 7–6(7–5), to win the singles title at the 2006 Monte Carlo Masters.
Vera Zvonareva was the defending champion and she defended the title, defeating Tamarine Tanasugarn in the final, 6–4, 6–4.
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.
Kremlin Cup, Tennis
Anastasia Myskina was the defending champion, but chose not to participate that year.
Yevgeny Kafelnikov was the defending champion and defended his title with 6–4, 6–4 against Magnus Larsson.
David Ferrer was the defending champion, and he successfully defended his title by defeating Stanislas Wawrinka in the final 6–4, 3–6, 6–1.
Roger Federer was the two-time defending champion and successfully defended his title, defeating Andreas Seppi in the final, 7–6(7–1), 6–4.
Viktor Troicki was the defending champion and successfully defended his title, defeating Grigor Dimitrov in the final, 2–6, 6–1, 7–6(9–7).
Elina Svitolina was the defending champion, but chose not to participate this year.
Tomáš Berdych was the defending champion and successfully defended his title, defeating Richard Gasquet in the final, 7−6(7−5), 6−7(2−7), 6−3.
Silvia Farina Elia was the defending champion, but lost in the semifinals to Lindsay Davenport. Claudine Schaul won her first WTA singles title, defeating Davenport in the final 2–6, 6–0, 6–3. This also proved to be Schaul's only singles title on the WTA tour.
Stan Wawrinka was the defending champion and successfully defended his title, defeating Mischa Zverev in the final, 4–6, 6–3, 6–3.
Kiki Bertens was the defending champion and successfully defended her title, defeating Barbora Krejčíková in the final, 6–2, 6–1.
Laura Siegemund was the defending champion, but could not defend her title due to a right knee injury.
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
Juan Martín del Potro was the two-time defending champion but chose not to defend his title.
Wang Qiang was the defending champion, but lost in the first round to Peng Shuai.