Sometimes the only thing you can do is wade back in with both fists swinging.

His left fist swung up and slammed into my face, but with little effect.

My fist swung around and caught him squarely in the side of the head.

A moment or two later, I recovered, but my opponent was on me with fists swinging.

To the left, then to the right, that fist swung in battering style.

But the last one was stepping in, fists swinging.

His left fist gripping the dagger swung up and back.

The other didn't have time to move before Rincewind was on him, fists swinging wildly.

The redneck moved closer to Terry, fists swinging at his side.

There were thuds, as men tangled together and fists swung.