After reviewing the newly acquired evidence user SIKE is not using ESP, the first round does came across as suspicious (http://puu.sh/bmKlH/d998581a91.jpg), the rush round the left to where he engaged a shot at zZzZzZ12, the shot was pre-fired on SIKE's behalf, possibly a fluke/panic shot knowing there was 2 users left and a decent team would be covering both corners to keep him pinned/contained in that area.
Round 3 zZzZzZ12 was hanging to the left of SIKE (using the glitch spot to see his opponents) any user using ESP would have seen him and seen it as a quick easy to kill, rather than dashing straight past.
Round 4, he chasing Hugging towards the ammo spawn at the cars, he see's the user goes to the right (towards AP spawn) so SIKE proceeds round at a wide angle (being cautious) when seeing that the opponent is no-where to be seen his can only presume that the user as headed back round to centre as to where he runs into Yurikka who I would presume would call-out !Enemy.
Round 4 again, there's a moment where SIKE pauses being the known sound player he is he listens for zZzZzZ12 and works out he's coming from the blue teams spawn (dashes/slashes), there's a moment where he loses track of the opponent (right at the point he begins to tumble) but then reacquires his location again once he grabs the HP spawn, enabling him to proceed in killing him.