Jelena Ostapenko beat world number one Aryna Sabalenka to win the Stuttgart Open in stunning fashion.

Ostapenko, who had failed to win in three previous meetings against Sabalenka, took the match 6-4 6-1.

The Latvian set the tone with a break of serve in the opening game and kept the pressure on throughout.

Sabalenka was broken again in the first game of the second set before dropping serve on a further two occasions in an uncharacteristically error-strewn performance.

Ostapenko raced to victory in emphatic style by reeling off five games in a row.

"I'm really happy today," Ostapenko said.

She said to her opponent: "It is great to share the court with you, you are such a great champion."