Illegal Screen/Intentional Foul

[refnuts]

A1 secures rebound who passes to A2 (outlet pass)who takes a few dribbles and passes to A3 in the frontcourt who begins to drive to the basket for an uncontested layup. A4 who is at midcourt contacts B1 after taking a step forward,bringing his arms up, and extending them. A4 was attempting to screen B1 who was defending A2 and did not see the contact coming.

I was the T and called an intentional foul on A4 because of the excessive contact.

It was a very strange play because A3 going for an uncontested layup at the time a blew my whistle.

This is the only time I have ever called an intentional foul on a screener.