catch somebody off-balance
throw somebody off-balance
throw somebody off balance

He can throw off balance and still hit the receiver.

But he stood fast and could not be thrown off balance.

He had trained the gifted to expect this so they wouldn't be thrown off balance.

I tried to tag him, missed and threw off balance to first.

But once the less predictable politics of public opinion began to matter, he was thrown off balance.

All of them except Data cried out as they were thrown off balance.

The enemy had been momentarily thrown off balance, but now the end would come very quickly.

Several were thrown off balance, went sprawling, and had to struggle to their feet.

And when the two worlds meet, each side can be thrown off balance.

It wasn't often she was thrown off balance so completely.