Good link that - cheers. My right achilles is still sore/tender from playing a tourney a couple of weeks ago. Playing today, it seemed to flare up and made me not want to push off from that foot at all ie anything that pulls on the achilles.
The soreness is right at back of the achilles almost level with the ankle bone. Same leg where I tore a calf muscles a few months back, so the calf may have been tight anyway (putting more strain on the achilles). Pinching it between thumb/finger results in a 'stingy' sort of pain, that's not mirrored by pinching the left achilles. Presumably this is a bit of achilles tendonitis?