Jon Hamm wears a Rolex Submariner

Hamm plays sports agent J.B. Bernstein, seen here at a chain-link ballfield with his arm draped over a co-star, a steel sports watch clear on his left wrist as he watches the field.

The watch reads as a stainless steel Rolex Submariner, with a dark dial and matching bezel on a steel bracelet. The Rolex blog Jake's Rolex World identified Bernstein's watch in the film as a Submariner, citing both the poster and screen grabs. The exact variant is hard to fix from this angle, so treat the call as tentative, and please weigh in via the comments if you can place the reference.