In general, all 3 photos are underexposed and soft. Judging on the motion blur on the swinging limbs, it's almost as if the shutter speed was to low and you were shooting with a very low ISO, with out seeing the settings it's hard to say.
1 - The limbs from the other players here distract from the main focus of the image, however even that is not ideal as the ball is away from the action point (the player attempting to make the block tackle), personally I would have scrapped this one.
2 - I would have looked to have cropped tighter to the player, also watch the horizon as it's not level. Look at the verticals here, the floodlight and the pillars on the stand, they all slope to the right every so slightly but enough to be noticed.
3 - Needs a tighter crop, especially as the foreground at the bottom of the image is distracting, again horizon's are not level. It's a good action shot, shame it's out of focus though.