[Shu Song]

The best defence has gotta be just continuous ramming another robot so they don't get an opportunity to shoot. Since this isn't basketball where a defence-man can't touch someone who's in the process of shooting, this strategy would be equal to just hugging the player with the ball all the time so they can't shoot or pass (which isn't allowed is b-ball). So I really don't think many robots will have to specially equipped for defence.

Whats more important is defence strategy; choosing which robots to stick on, or choosing whether to play defence at all. You could just sit back and load up on all the balls your opponents score and when the period ends, got back and score all those points back.

The most interesting defence period will most likely be the last period where both teams can score and there are no backbots. There are so many strategies for that depending on bot's weakness and strengthes and the score situation.

So all in all, just ram the robot trying to shoot.

<edit>replace all instances of "ram" with "impact from short distance"</edit>