2019 ATP Tour

Pierre-Hugues Herbert and Nicolas Mahut defeated Raven Klaasen and Michael Venus in the final, 6–3, 6–4 to win the doubles tennis title at the 2019 ATP Finals.

Stefanos Tsitsipas defeated Dominic Thiem in the final, 6–7, 6–2, 7–6 to win the singles tennis title at the 2019 ATP Finals. Tsitsipas was making his tournament debut. It marked the first instance since 2005, and only the fourth instance overall, that the Tour Finals champion was determined via a final-set tiebreak.

Marcel Granollers and Rajeev Ram were the defending champions, but chose to compete with different partners. Granollers played alongside Horacio Zeballos, but lost in the second round to Jamie Murray and Neal Skupski. Ram teamed up with Joe Salisbury, but lost in the quarterfinals to Ivan Dodig and Filip Polášek.

Novak Djokovic defeated Denis Shapovalov in the final, 6–3, 6–4 to win the singles tennis title at the 2019 Paris Masters. It was his record-extending fifth Paris Masters title, and he did not drop a set en route.

Joe Salisbury and Neal Skupski were the defending champions, but Skupski chose to compete in Basel instead.

Dominic Inglot and Franko Škugor were the defending champions, but Inglot decided to compete in Vienna instead. Škugor played alongside Nikola Mektić, but they lost to Jean-Julien Rojer and Horia Tecău in the first round.

Kevin Anderson was the defending champion, but could not participate this year due to a knee injury.

Two-time defending champion Roger Federer defeated Alex de Minaur in the final, 6–2, 6–2 to win the singles tennis title at the 2019 Swiss Indoors. He did not drop a set en route to his 103rd and final ATP Tour singles title. It was his 10th Swiss Indoors title, making Federer the first player in ATP history to win 10 same tournament titles on two different surfaces (alongside Halle, played on grass).

Nicolas Mahut and Édouard Roger-Vasselin were the defending champions, but Mahut chose not to defend the title and Roger-Vasselin chose to compete in Stockholm instead.

Andy Murray defeated Stan Wawrinka in the final, 3–6, 6–4, 6–4 to win the singles tennis title at the 2019 European Open. It was Murray's first singles title since the 2017 Dubai Tennis Championships, his first appearance in an ATP Tour singles final since his career-saving hip resurfacing operation, and his 46th and last ATP Tour-level title.