With the Masters just one week away, Rory McIlroy says mental mistakes are still hampering his efforts to get back on top and reclaim control of his game.

McIlroy, who has had a disappointing start to 2013, signed up for the Texas Open at the last minute, aiming to get a few solid rounds under his belt before the first major of the year begins at Augusta National.

But he settled for an even-par 72 in the first round at TPC San Antonio, with his four bogeys including a string of three in a row mid-round that robbed him of all momentum.