Pieters took a one-shot lead into the final round at Albatross Golf Resort in Prague and carded a closing 69 to finish 19-under par, a shot ahead of playing partner Adri Arnaus.

Pieters held a four-shot lead after going to the turn in 33 and picking up a fifth birdie of the day on the 12th but saw his advantage halved when he bogied the 16th and Arnaus made birdie.

FINAL LEADERBOARD

Arnaus also birdied the 18th to ensure Pieters could not relax entirely but the former Ryder Cup star safely holed his par putt from two feet to seal a first individual victory since 2016.

England's Sam Horsfield was two strokes further back alongside defending champion Andrea Pavan, who surged through the field with a final round of 65, the joint-lowest score of the day.

West Australian Jason Scrivener carded a final-round 72 to be placed in a group tied for 30th place on eight under while New South Welshman Dimi Papadatos finished a shot further back.