Sanny Rudravajhala
BBC Radio 5 Live at St Andrew's @ Knighthead Park
We had fireworks to welcome the players and Jay Stansfield followed that theme with a superb goal which proved to be the winner for Blues.
He robbed Conor Coventry wide on the right, on the halfway line, drove all the way to the box and fired home for his 19th in all competitions.
That all happened after Charlton’s first-half goalkeeper handled outside the area but managed to avoid being spotted. Ashley Maynard-Brewer was taken off at the break - perhaps he was injured, but he was getting relentlessly booed and was looking shaky.
By the break, we'd already seen the studs going in, head clashes and confrontations. I'd say Charlton brought that to the game, perhaps an attempt from Nathan Jones to derail a surging City side who had also hit the post from a 25-yard Kieran Dowell free-kick.
The second half was thoroughly ill-tempered. It reminded me of one of my awfully cold, drizzly Monday five-a-side games where the referee had let an early challenge go and by the end it's descended into chaos.
No bother for Birmingham though, they're looking unstoppable at the top. They're now nine points clear and I think we can start to think of them as the League One champions-elect.