Tiger Woods admitted that he hit "some of the worst golf swings" of his career on Thursday after his opening round of 72 at the Masters in Augusta.

After a disappointing start, the world number seven got himself on two-under with two holes left to play.

However, a pair of bogeys saw the four-time winner move back on level par with 15 others.

Despite the tough start round, Woods was able to take the positives out of his opening round.

"I hit some of the worst golf swings I've ever hit today, and that's all right," he said. "I just hung in there and grinded my way round the golf course and stayed very patient, stayed in the moment. I got a lot out of that round.

"I made some bad swings. That's fine. My commitment to each and every shot, what I was doing, my alignment, my set up, everything was something that I'm excited about and I can take some positives going into tomorrow about that.

"Granted, it might be late tomorrow, but at least I have something to build on."

England's Lee Westwood holds a one-shot lead going into day two of the tournament.