Meier then gave Switzerland a 2-1 lead with a power-play goal at 18:37, backhanding a rebound in front past Dostal after the goalie made an initial save on Josi’s one-timer.
Radim Simek tied it 2-2 at 6:33 of the third period. Necas collected a loose puck and sent it back to the point, and Simek pounced on a rebound of Chlapik’s redirection in front of the goal crease.
But Pius Suter quickly put Switzerland back in front 3-2 at 8:07 from the edge of the right circle for his second goal of the tournament.
Czechia had what would have been the tying goal waved off at 16:34, when David Pastrnak was ruled to have interfered with Genoni during a power play.
“I thought we battled overall,” Gudas said. “I’m really happy with our effort. Unfortunately, I thought we deserved a little bit of luck, but it’s a tournament that’s short. But if we want to win, we have to go through anybody.”
Switzerland now awaits its next opponent on Tuesday. Fiala won’t be on the ice, but his importance to the group remains.
NOTES: Kukan became the second defenseman to score in overtime at Olympics with NHL players, following Drew Doughty (Canada) in 2014. … Switzerland remained perfect against Czechia at Olympics with NHL players, claiming its third win in as many meetings (2014, 2006).