Jason Day will be re-crowned world No.1 after advancing to the semi-finals at the WGC-Dell Matchplay in Texas.

The 28-year-old brushed aside Brandt Snedeker 3&2 in the morning round of 16 and then defeated Brooks Koepka 3&2 in the quarter-finals to set up a semi-final showdown with world No.3 and defending champion Rory McIlroy.

With incumbent top dog Jordan Spieth going down to South Africa’s Louis Oosthuizen in the round of 16, Day’s trip to Sunday’s semi-finals is enough to attain the mantle of world golf regardless of where he finishes.

The eight-time US PGA Tour winner can consolidate the world No.1 ranking through to the Masters in less than two weeks’ time if he lifts the WGC title this week.

“To be able to get back to No.1 in the world is fantastic,” Day said

A victory would take him to six wins in his last 13 starts and be the second time this season an Australian has won in back-to-back weeks after he won the Arnold Palmer Invitational last week. Fellow Aussie Adam Scott won the Honda Classic and WGC-Cadillac Championship in successive weeks.