[EricH]

And if a robot tips while you're pushing it, back off, no matter what caused the tip. Back in 2004, my team had a robot that was rather tipsy on flat ground. Early in our first event, a team got to us on flat ground and pushed us over. They'd have gotten away with it if they'd let us get up (we'd fallen so that we could have). But as soon as our arm started coming over to get us upright, they came back and knocked us onto our side, then shoved us into the ball corral. They got penalized big-time.

If the refs aren't sure whether the tip was intentional, and you back off and stay backed off long enough for the tipped team to get back upright, probably nothing will happen. But if you keep harassing the downed robot, you'll get penalized for violations of the grace period and/or intentional tipping.