MASTERS champion Scottie Scheffler hailed his mental strength after making it four wins in five starts with a rain-delayed victory at the Heritage Classic.

Scheffler returned to Hilton Head today morning holding a five-stroke lead with three holes to play after a storm halted proceedings on Sunday.

The world number one dropped a shot at the last to finish 19 under par, three shots ahead of fellow American Sahith Theegala, with Patrick Cantlay and Wyndham Clark another stroke back.