1642: The referee's assistant at St Andrew's, Trevor Massey, is in all sorts of trouble. He has spent the last two minutes sat on the floor, receiving treatment, after being hit on the head by the corner flag. Looks like he's got a nasty cut on his head and may not be able to continue. The flag had been the victim of a crunching tackle by Liam Ridgewell. Yep, Steve Bennett comes on to replace him. Massey looks OK, but a bit shaken. This has been one crazy, crazy day.