one of the most memorable was getting absolutely dismantled by yomps on an hour and a half long badlands match (and the entire rest of that season, he was so fucking good, rest in peace man)
another was getting a new mouse (fuck u logitech) that had a more sensitive mouse click and accidentally popping uber in a stalemate vs froyo black, we were tied 1-1 on sunshine (and i think it was in playoffs, when we had won the first map on granary), after which point team morale completely disappeared and we got giga rolled
yet another invite playoffs match was tied 4-4 on gully last and somehow my phone misheard my comm as 'hey google' and started blabbering some shit, which happened at the exact same instant that the enemy sniper peeked for the hero shot, so i died and we lost the match (we won the third map tho, thanks google)
another was IM grand finals, my first ever important game, where i started off having Zero ubers in the first half: one drop to a spy, one drop to synchronized rocket spam, and another to a sniper :) but we somehow came back and won (get owned ckj)