Rory McIlroy and Shane Lowry entered the Zurich Classic as the clear favorites to defend their title from last year. Just two weeks removed from his first Masters win, McIlroy made it clear he wanted a chance to do just that.

Novak and Griffin tied for the best round of Friday with a 6-under 66 to vault into a share of the lead. For Novak, it's a continuation of the best stretch of his career as he's coming off of a runner-up at the RBC Heritage. He seems to be carrying that positive momentum into this week.