Ticks are what the Overwatch community usually uses to describe the marks that show up when a team captures part of a point (past 33% on Hybrid or Assault/2CP, the progress saves and is shown by a "tick" – a small arrow – in the UI).
eg:New YorkExcelsior get 0 ticks in this match.
In this context, NYXL getting 0 ticks means they never got to 33% on Hybrid or Assault's Point A.
A person pretending to be something they aren't, or an impostor. This is inferred because of the old alien movies where alien pods appear on earth and the "pod people" dispose of the humans and slowly reproduce the bodies, pretending to be humans.
The pod person was pretending to be my father, but I knew that he was an alien when he acted differently than my father ever would have.