- the menu and the GUI is very nice.
- I would add some more lights to the scene (lamps switched on), mixing the warm Sun light with colder artificial lights would result in more realism. after daytime matches the finals could be played in the evening or at night.
- surfaces are very flat, I would add some noise by normal maps at least to the red-white-green field dividers (and to the field to get a slightly worn look). also some more reflections (cube-mapping or at least speculars) would be great on close items.
- the gameplay seems to be simple, I mean targeting the ball and making a straight and accurate rolling, it could be disturbed a bit by some human breathing movements or something similar... in a darts game the hand moved from left to right and backwards continuously, so the speed adjustment and aiming were not so easy.
otherwise, really nice job!