The Coyotes said Prucha was conscious and taken to a hospital for evaluation.
Neal checked Prucha into the boards near the penalty box area and Prucha struck his head and crumpled to the ice with 15:59 remaining in the period.
Prucha lay on his back for about 7 minutes while emergency personnel strapped him to a gurney before rolling him off the ice. No penalty was called on the play.
Coyotes center Martin Hanzal, Prucha's Czech Republic countryman, picked a fight with Neal a few minutes later, landing several punches.