World number one Jason Day holds a share of the lead at the RBC Heritage after carding a two-under-par score of 69 on day two.

The Australian, who came into the event on the back of a top-10 finish at last week’s Masters, shot four birdies and two bogies to move onto six-under-par for the tournament and hold the halfway lead alongside American duo Kevin Chappell and Charley Hoffman.

The 28-year-old, who claimed back-to-back PGA Tour victories at the Arnold Palmer Invitational and the WGC-Dell Match Play in March, admits he has been feeling slightly fatigued during the opening two rounds at Harbour Town Golf Links.

He told reporters: “Coming to this week, you’ve got to get yourself back up come Thursday. I may be a little mentally fatigued but there’s no excuse. I’ve got to focus. I needed to get out there and hit the shots and focus.”

The 2015 PGA Championship winner said he felt under pressure when he shot out of bounds at the par-five sixth on Friday, but overall he has been satisfied with his performance levels during the opening two days of the event.

He added: “I was playing great and then hit one out-of-bounds. A lot of people don’t realise how much the mental side comes into play at this level. Right now, I’m sitting in a pretty good position for the weekend. I just got to keep doing what I’m doing.”

Day is the 2.88 favourite to secure his 10th PGA Tour title come Sunday, while fellow leaders Chappell and Hoffman are on offer at 13.00 and 11.00 respectively to claim overall glory in South Carolina.