Northern Ireland’s Graeme McDowell fired a flawless final round of 63 to win the Celtic Manor Wales Open by three strokes from a charging Rhys Davies.

The Northern Irishman had to battle to make the cut on Friday but played himself into contention with an excellent third round of 64. Even with that effort, however, McDowell started the final day four back of Germany’s Marcel Siem.

But Siem’s lead quickly disappeared when he found the water twice on the par-3 3rd, en-route to a quadruple bogey seven. Although he played the remaining holes in one-under-par, the German finished a disappointing seventh.

McDowell sprinted to the turn in just 30 shots and rattled off two further birdies on the 10th and 11th. By that stage the 30-year-old Golf Monthly columnist was locked in a ding-dong battle with home favourite Rhys Davies. The Welshman played some scintillating golf to cover the 12 holes between the 4th and 15th in 10-under-par. That incredible streak included two eagle twos – a holed approach to the 439 yard 8th and another at the driveable 15th.

Davies dropped a shot at the difficult 16th but still finished with a course record 62 and posted the clubhouse target at 12-under-par.

“I enjoyed every second. I went out very relaxed,'” said Davies. “I tracked what Graeme was doing. He continued to make birdies, so I kept my head down and tried to make some more.”

Although he held a three shot lead, McDowell still had to negotiate the tough closing stretch, played into a headwind. He did so with total control and composure to notch up his fifth European Tour title.

“I think it’s the best final round I’ve ever played to win a tournament,” he said. “The first 11 holes was dream golf and I am ecstatic. I feel like I’m in the form of my life right now and I really feel I have a big event in me.”

McDowell will go into the US Open at Pebble Beach in two weeks time full of confidence and knowing that good performances in the next two Majors will all but secure his place in Colin Montgomerie’s Ryder Cup side for the matches back at Celtic Manor this October.

Another man trying to book his place in that team is Luke Donald. The Englishman completed a highly successful three-week stint on the European Tour, recording a third place finish this week. He ended the tournament one clear of three players who tied for fourth – Robert Rock, Edoardo Molinari and Stephen Gallacher.

The Celtic Manor Wales Open
The Celtic Manor Resort, Wales
June 3-6, purse, par 71

1    Graeme McDowell (NIR) 72    70    64    63    269    €350,940
2    Rhys Davies (Wal)    67    73    70    62    272    €233,960
3    Luke Donald (Eng)    75    65    69    65    274    €131,813  
T4    Robert Rock (Eng)    68    71    70    66    275    €89,569
T4    Edoardo Molinari (Ita)    67    71    70    67    275    €89,569
T4    Stephen Gallacher (Sco) 70    73    63    69    275    €89,569
7    Marcel Siem (Ger)    69    67    66    74    276    €63,169
8    Miguel Angel Jimenez (Esp) 70 68    70    69    277    €52,641
T9    Niclas Fasth (Swe)    69    72    67    71    279    €42,674
T9    Richard McEvoy (Eng)    67    71    69    72    279    €42,674
T9    Thomas Bjorn (Den)    69    68    68    74    279    €42,674

Note: Player score in bold signifies Titleist ball usage only