The 31-year-old Scot was giving a lesson to a group of youngsters in the tented village at St Andrews when one of them caught him on the left wrist during his back swing.

Lawrie's injury was treated with ice at the European Tour physiotherapy unit. He was advised to rest the wrist and cancel his Tuesday practice round.

Lawrie said: "It was painful at the time but I'm not in doubt for Thursday.

Swelling

"I have just got a bit of swelling that will go down tonight and then I will play tomorrow morning, early.

"It's very disappointing because I wanted to play my practice round on Tuesday, but I have to rest it and let the swelling go down."

He added: "I normally only have one practice round, so it's not going to do me any damage."

He followed up his success with an impressive Ryder Cup debut in September, but since then has struggled to regain top form.

This is the second time this season that Lawrie's build-up to a Major has been hit by injury.

He was forced to pull out of the US Open last month because of a thigh injury.

Lawrie is due to tee off at 12.20pm in Thursday's first round. He is playing on the Old Course with American duo Fred Couples and John Huston.