Ginger gets to the front door - cat attack!

After some days Ginger would come to the front door to wait for a plate of food but wouldn't begin eating until the door was closed and he was alone.Gradually the other cats would come out and be around at the same time but not too close. Calm reigned. Until one day Ginger who was eating in his usual guarded way saw Tabitha our gentle tabby move from behind some plants. He moved unbelievably quickly, knocked her backwards by the speed and power of his attack. No claws some noise but Tabsy was hit off her feet into the soil. I shouted and he ran not to be seen again....we thought.