If you want to have 3 positions playing 48 minutes you should dress 7 players, instead of 9. If you want to get 48 minutes for one position you MUST assign all players to positions. If you have PG,PF,C slots all used by one player then you have 2 empty slots left. That means 4 assignable player slots (considering walkover) SG starter, sub; SF starter, sub. If you dress up 9 players you can not effectivly assign them, you have 6 players for 4 slots. When WO comes into effect, starters at SG and SF go to the bench and sub spots will be put into the game, thus leaving you with 2 more available players (it does not matter even if you assign them to reserve spots at SG,SF). So they will be randomly subbing out 2 of the PG,PF,C starters. Even with 7 players dressed assigning 3 of those to PG,PF,C and leaving SG,SF empty then coach will prolly just mess it up for you in WO situation.