Matt Wallace shot a seven-under-par 65 to eclipse a record-breaking round by Thorbjorn Olesen and claim a one-shot victory at the BMW International Open in Pulheim.

Denmark's Olesen moved into the lead with an 11-under-par round of 61 only for the Moor Park professional, who started the day two shots off the lead, to claw back the deficit.

Wallace was back in the clubhouse by the time Martin Kaymer and Mikko Korhonen failed to equal his final total of 278, both being forced to settle for a share of second place with Olesen.

Olesen produced nine birdies and an eagle to record the lowest-round score in the history of the tournament, giving him a three-shot advantage before the final group got started.

Kaymer looked a good bet for victory as he stood only one shot back with two holes to play, but a bogey on the 17th saw him come up short.

The victory is Wallace's third triumph in only 15 moths as a Europen Tour professional.