Diddy walks out of Chateau Marmont in Hollywood (March 9, 2013)

Diddy walks out of Chateau Marmont in Hollywood (March 9, 2013)

*Sean “Diddy” Combs is among the newcomers joining Kevin Costner and “42” star Chadwick Boseman in “Draft Day,” which begins production today in New York.

Rosanna Arquette (“What About Brian”), David Ramsey (“Arrow”) and W. Earl Brown (“Rectify,” “The Lone Ranger”) have also been announced as part of the production from Co-producers Summit and OddLot Entertainment.

As previously reported, the film – directed and produced by Ivan Reitman – centers on an NFL GM (Costner) in Cleveland making personnel decisions on draft day. The dramedy revolves around events during a single day.

Jennifer Garner, Frank Langella and Ellen Burstyn are also on board.

Filming in New York will take place at Radio City Music Hall during the NFL draft, which begins today.