Completely at a loss, the only games I've won today vs Zerg are where they don't go lurker or I go skytoss. Majority of games I have a significant advantage, and then lose...
http://i.imgur.com/V8of5ZD.jpg?1
He was on 45 workers the entire second half of the game.
The second battle is when he comes in with ultra lurker, i flank the lurkers from the back (so i don't even have to attack the ultras).
http://i.imgur.com/hQTth9O.png?1