Dustin Johnson's Masters fall will inhibit swing, says biomechanics expert

The big-hitting American was the pre-tournament favourite before his slip down the stairs.

World number one Dustin Johnson "will be affected" by his fall on the eve of the Masters even if he declares himself fit for the start of the tournament, according to a golf biomechanics expert.

The big-hitting American, the pre-tournament favourite before his slip down the stairs who was looking for his fourth successive victory of the season, suffered a "serious fall" at his rental home in Augusta on Wednesday.