The world number three is the defending champion, and has been backed to once again shine on the redesigned Royal Pines course.
"You never present the trophy at the start of the week," said Leishman.
"I don’t think there are too many courses that don’t suit Scotty’s game but a lot can happen out there.
"The course proved last year it’s not the pushover people thought it would be and there are some areas off the new greens which are quite severe that will bring double-bogeys into play if you try to be too cute."
The new course layout is expected to be tougher than the original design, with its thick rough and lack of run set to make for some tricky play.
"There’s a bit more undulation, there’s an interesting style of bunkering, there are run-offs and the newly raised greens are not overly flat like the other side of the golf course … I think they’ve done a really, really good job," Senden said of the changes.
"I think as a process all players should respect what’s happening here at Royal Pines."