2019 Stockholm Open – Singles

Stefanos Tsitsipas was the defending champion, but chose not to defend his title.

Denis Shapovalov won his first ATP Tour singles title, defeating Filip Krajinović in the final, 6–4, 6–4.

Former world No. 8 Janko Tipsarević played his last ATP match at the tournament losing in the quarterfinals to Yūichi Sugita.

Seeds
The top four seeds receive a bye into the second round. • #🇮🇹 Fabio Fognini (second round)

• #🇧🇬 Grigor Dimitrov (second round)

• #🇺🇸 Taylor Fritz (second round)

• #🇨🇦 Denis Shapovalov (champion)

• #🇪🇸 Pablo Carreño Busta (semifinals)

• #🇺🇸 Reilly Opelka (first round)

• #🇪🇸 Fernando Verdasco (withdrew)

• #🇬🇧 Dan Evans (second round)

Seeds
• # 🇺🇸 Tommy Paul (qualified)

• # 🇦🇺 Alexei Popyrin (qualified)

• # 🇰🇷 Chung Hyeon (first round)

• # 🇮🇹 Gianluca Mager (qualifying competition, lucky loser)

• # 🇦🇹 Dennis Novak (qualified)

• # 🇯🇵 Yūichi Sugita (qualifying competition, lucky loser)

• # Ernests Gulbis (first round, retired)

• # 🇩🇪 Oscar Otte (qualifying competition, lucky loser)

Qualifiers
• # 🇺🇸 Tommy Paul

• # 🇦🇺 Alexei Popyrin

• # 🇩🇪 Cedrik-Marcel Stebe

• # 🇦🇹 Dennis Novak

Lucky losers
• # 🇩🇪 Oscar Otte

• # 🇯🇵 Yūichi Sugita

• # 🇮🇹 Gianluca Mager