I played for about 1.5 hours. So far, my impression is quite positive.
It's Nintendo and somehow the gameplay is a bit different from others.
Several modes included (from my memory):
1. exhibition
2. challenge (during the match, it needs to fulfill some criterias)
3. mini game
4. training
5. records
6. options
The control is quite differnt from normal baseball games as it has 'power move'. The interface is quite interesting and the characters are all web-animated imo.
Can't wait for the soccer. Just hope Nintendo also give us a some thing new interface/control methods.