Vaughan suffered the injury fending off a rising ball from Hampshire's Stuart Clark while playing for Yorkshire.

The early diagnosis suggested he would be out for three to four weeks, ruling the 32-year-old out of the 17 May Test.

But Yorkshire director of cricket Moxon said: "He has definitely improved since it happened last week."

It had been feared the finger break would prove the latest in a long line of injury problems that have plagued Vaughan for over a year.

He missed the entire 5-0 Ashes whitewash against Australia, and only just returned to fitness in time to play in the World Cup.