Agnieszka Radwanska has defeated Danka Kovinic in less than an hour to win the Tianjin Open title on Sunday and clinch a spot in the WTA Finals in Singapore.

The second-seeded Radwanska won 6-1 6-2, breaking Kovinic five times and saved all five break points she faced.

The Polish player didn’t lose a set in five matches this week to win her 16th career WTA Tour title.

Radwanska became the fifth player to qualify for the year-end championships, joining Maria Sharapova, Simona Halep, Petra Kvitova and Garbine Muguruza in the field.

Top-ranked Serena Williams is skipping the tournament to rest and recover from injuries.

Radwanska has qualified for the WTA Finals for the fifth consecutive year.