Clayton Davis The Oscar nominations announced on March 15 didn’t offer too many surprises, but the race for best picture in this unconventional year is still wide open. Here’s how one of these five nominees could win the top trophy on April 25.“Mank” (Netflix)If you’re the most nominated film of the lot — ”Mank” leads all films with 10 nominations —then that typically makes you a heavy favorite to win it all.