Now we have a special guest to mark the day 66 years ago when jackie robinson became the first black player in major league baseball. In honor of jack we rie robinson day, every player will wear... See More
Now we have a special guest to mark the day 66 years ago when jackie robinson became the first black player in major league baseball. In honor of jack we rie robinson day, every player will wear number 42. We're joined by the star of the new movie, "42," chadwick boseman. You're number one at the box office. It's got the be really satisfying. It's satisfying. Having a great time. You've been to the white house. President obama hosted a screening as well. That's right. That's right. It's been amazing just to -- just -- being able have this movie be appreciated and the cultural significance of it. So so, yeah, the first lady and the president hosted two screenings. The movie brings home how tough things were. I want to show a scene where he's getting booed, jeered on the field. And peewee reese, his short stop comes up and talks to him. Take a look. They can say all they want. We're just here to play ball. It's just a bunch of crack pots still fighting the civil war. Well, hell, we would have won that sun of a gun if the corn stalks held out. We just ran out of ammunition. Better luck next time, peewee. Ain't going to be a next time, jack. All we got's right here. Tough stuff right there. I hear you had to get in shape to play? We -- we did some really intense training. They gave me a -- a trainer, phil carlson, who is just an amazing conditioning coach and, um -- then I had baseball coaches. I did two-a-days. Baseball practice if the morning and in the afternoon, I worked out with phil. And -- no pressure, but jackie robinson's widow comes up to you and says she thought in the original movie, sidney poitier was going to play him. You have to follow in the footsteps. No way to live up to that. I said I would work as hard as i could and do my best to honor him and give her a sense of what I knew about him already. And I said, I will research and find out as much as I can. You tell me as much as I can. It was so clear on the screen. You did a great job. Congratulations on that and all the success. Mark wahlberg live here
This transcript has been automatically generated and may not be 100% accurate.