My bike prep consisted of a good check over, a chain clean and lube, a general light clean and pumping up the tyres. Decided the cut in the back tyre was sufficient for T+1 and got a Vittoria Rubino Tech (Tech means it's got a bit of kevlar for puncture resistance). Sod of a thing to get on but it was getting there when there was a loud bang. Checked for tube burst - no, checked for tyre damage - hardly, checked the rim (I thought I heard something metallic drop) but nothing, ran a hand over the spokes and all twanged nicely so I finished putting the tyre on and stuck the wheel back on the bike whereupon it jammed on the brakes!
Busted spoke! Sprocket side of course! Looks like an emergency trip to the LBS tomorrow.