Damp greens on Thursday had made for fine scoring conditions but with persistent rain falling, it was difficult for the early starters on Friday to make inroads into Schauffele’s advantage.

However, after contending at the Masters in April, 2020 US PGA champion Morikawa again demonstrated his ability to produce his best form at the majors.

His impressive round was dotted with immaculate approach shots, and he completed an outstanding back nine, featuring five successive birdies in a row to catapult into top spot.

Mark Hubbard, 34, only has a best finish of 51st at this tournament but was the first to match Schauffele’s first-round score when he drew level at his ninth hole while Belgium’s Thomas Detry found an eagle at the last to join them on nine under par.

England’s Aaron Rai put in another strong performance, shooting 68 to finish at six under.

Compatriot Matt Fitzpatrick is at level par for the tournament after carding a two-over 73.