Need help with these vintage sports movie photos

[Vintagedeputy]

Picked up a pile of old sports movie photos in an online auction. I couldn’t tell much about them while they were being auctioned off and the bid was cheap enough so I picked them up:

The three football photos have no information on them except a numbering system in the bottom starting with the letters KO. I have no idea what movie they may reference.

The single photo of the group of players with the catcher at the plate has a simple notation on the back that says “Knocking ‘em over”.

The three photos have a clipping on the back from Paramount pictures, indicating that this was from a movie called “Warming Up”. The man in the suit holding the ball is former Giant, Turkey Mike Donlin. This movie seems to date to 1928.

The four photos have a stamp on the back from Paramount pictures and reference a movie called “Fast Company” from 1929.

Does anyone have any more information about the unidentified photos, any movie info, any thoughts on the photos themselves or any other information?