Mike Harwood has led the Aussie charge at the Scottish Senior Open but will have left Craigielaw Golf Club with a bitter taste in his mouth.

Starting the final round eyeing off a top-10 finish, Harwood made four bogeys in the space of six holes in his final nine holes to end the week at 5-over and tied for 22nd.

The first home winner of the Scottish Senior Open in more than a decade, Gary Orr described the Sunday conditions as “brutal” as he held on to win by a shot from England’s Paul Streeter at 4-under par for the three rounds.

Starting the tournament with two birdies in his opening three holes, Harwood made a positive start with a birdie at his first hole on Sunday but dropped shots at the third and fourth holes to be 1-over for his round.

A birdie at the par-3 sixth saw him make the turn square with the card but three consecutive bogeys from the 12th hole and a fourth at the 17th prevented the 59-year-old from finishing higher on the leaderboard.

Five bogeys and a double bogey led to a disappointing final round of 77 for Peter Fowler who finished tied for 37th alongside countryman Peter O’Malley, who handled the difficult conditions better than most with a 1-over par final round of 72.

Victorian David McKenzie used a late flurry to record his best Champions Tour finish in America since March, tied for 17th at The Ally Challenge in Grand Blanc, Michigan.

Sitting inside the top 10 going into the final round, McKenzie lost ground to the field with dropped shots at the seventh, ninth and 11th holes but came back to life in spectacular fashion.

A birdie at the par-4 12th was followed by an eagle three at the par-5 13th and another birdie at the par-4 14th-over on his round to 1-under in the space of three holes.

A bogey at the last was not how he was hoping to end the week as he finished seven shots back of Englishman Paul Broadhurst.