Ouch. That basketball hoop accident sucks.
I had the same style crack in my hatch trim piece when I bought my car. The piece is bolted on right behind that spot so it must get a lot of tension behind there causing the crack. I got a replacement from a salvage yard and paint matched it for my car. You could probably find a prematch painted piece for your car if you can find a silver 1.5 generation Focus at a salvage yard.
Hatch Nation #13 : Rally Revolution #13 : ROTM Jan '13
It's Bryan, not Brian
RSVT-170 Build in Progress
Derusting Rusty Build in Progress