I did a quick 50 second video of the miniatures in my Dreadball by Mantic Games set. You can see the size of the players compared with the rest of the players and MVPs.
Some mold lines and a little clean up. They appear to be 28mm or maybe 25mm so if you want to use other models in their place or vice versa, you may need to adjust for size some.
Both teams are on the left, with the Ref Bot and ball on the flank, while the MVPs are at the far right.