World number one Rory Mcllroy concedes his preparation for the US Masters next month is not where he would want it to be with just a month to go before the competition.

The Northern Ireland star shot an even-par 72 in the final round of the WGC-Cadillac Championship on Sunday, leaving him one-under for the week and well back on the leaders and he is particularly unhappy with his approach shots.

Mcllroy will be going for a career Grand Slam when he T’s off at the Masters in April – he is currently 5.76 in the Green Jacket outright betting – but his form is not where he wants it to be and his frustration was there for all to see last week when his three iron found itself flying through the air and into the drink after one poor shot too many.

He was reunited with the Iron by course owner Donald Trump after the weekend’s final round at Doral after a diver had fished it out of the water.

The Northern Irishman ended a frustrating tournament with a double bogey on the eighteenth and, after missing the cut a week earlier in the Honda Classic, he accepts his form is not what it could be.

“The game’s just not quite there. I’ve got a week off now to try and work on it a little bit,” said McIlroy, who missed the cut at last week’s Honda Classic.

“I am pretty disappointed with how I played overall. I felt it was a little better again today for the most part but a bit of a disappointing finish. But it’s just not quite 100 percent.”