KOSICE, Slovakia — Matus Sukel scored early in the first period and Slovakia went on to beat the U.S. 4-1 on home ice Friday night, a stunning result on the opening day of the world hockey championship.

Alex DeBrincat had a goal off assists from Patrick Kane and Jack Eichel to pull the Americans into a tie midway through the period in the Group A game, but they couldn’t score again against Patrik Rybar.

Erik Cernak and Tomas Tatar put the Slovaks up 3-1 in the second period. Michal Kristof also scored.