The player dominated the match as if entering the zone of total concentration.
Usage
ゾーン is commonly used as a suffix to designate areas: 禁煙ゾーン (no-smoking zone), フリーゾーン (free zone), セーフティーゾーン (safety zone).
In sports and psychology, ゾーンに入る (to enter the zone) describes a state of heightened focus and peak performance, similar to English "being in the zone."