Did Dark style Roach/Ling allin vs him. With zero scouting (no SCV no reaper) he:
Takes his 2nd gas after I open pool first.
Stays on 1 base and goes 2 SP Banshee without getting any factory units.
Reinforces wall and builds a bunker.
Prepulls SCVs before my attack hits.
Attack moves his first Banshee into my attack without seeing it instead of rallying it across the map.
The only thing that doesn't look like hacking is that he uses Marines twice to scount for Overlords, however the first Marine initially runs straight for the OV, then changes it's direction because it couldn't have gotten it anyways, but then once he can attack it again moves directly to it.