Last week's cheque was just over £565,000. This week's was £500,000 - and he now is not only second to Paul Casey on the European money list, but also just outside the world's top 10 heading into the Open at Turnberry.
Kaymer, who began his run of form in Paris last week with a course record 62, needed 'only' a two-under-par 69 after starting the day a stroke behind Fernandez-Castano.The gap doubled when he bogeyed the 455-yard second, but once he had birdied three of the next six holes he had top spot and never let go.
He said: "To win at the home of golf is always something very special. I missed the cut the week after my first two wins, but this week was obviously different.
As he was in Paris last week, Kaymer was clinical once again the greens. Like his stable mate Henrik Stenson, Kaymer has spent time with Putting Coach Phillip Kenyon this year. Now Kaymer moves on to the Open at Turnberry next, hoping to make it three in a row.
Putting Coach Phil Kenyon keeps a watchful eye over Martin Kaymer