[kyleb]

Bodyweight work is great and allows you to get a lot of reps in. You'll build great functional strength in doing so, but if the goal is to get bigger, then at some point bodyweight exercises become fairly useless.

Personally I do a lot of bodyweight exercises for baseball with a heavy squat/deadlift routine to augment it. Push-ups of varying types (sometimes with plates on my scapula or bands around my arms to increase resistance) are great for your rotator cuff, chest, arms, and stabilizer muscles in the core if done right.