Run race ((orienteering)) 20:53  *** 3.6 km (5:48 / km) +40m 5:30 / km
Sprint relay at Yarra Valley Grammar, although I was running third in an unofficial (and incomplete) team. Pushed off at the start and instantly felt a sharp pain on the inside of my left knee; thought initially that my race was over inside 10 metres but decided to at least give it the first leg to see how it felt. The pain eased to nuisance level within a minute or two and didn't really affect my running except to make me a bit tentative on stairs and uphills, and this turned out to be probably my best run of the three (certainly aerobically). A bit less technical than the other two and went through it fairly smoothly.
As I thought I might, I pulled up pretty sore once cooled down and had difficulty walking in the rest of the day; no question of running in the afternoon, and I think I might be on the sidelines for a few days (not such a bad week for it to happen as the later part of this week was going to be a write-off anyway). The fact that I was still able to run the course suggests to me that there isn't a major structural problem and it's probably a strain of some description (albeit in a place which I've never experienced before).