I think this was a coming of age performance at LB for Zinch.
Previously he's been playing like a guy who's been stuck at LB to fill a hole. Even when he played well, he still looked out of position and a bit ungainly, and for someone who was an attacking midfielder playing LB, he never really went past the halfway line, unless it was to put in the occasional cross from deep areas.
Today though he looked like a LB, but on top of that he brought some of his qualities as a midfielder to the role, lovely interplay, good link up, some nice passes.
Everything just looked 10x more confident, more assertive, like he was at ease with the role he was being asked to play and not a guy filling in to help out.