CALGARY, FEB. 13 -- Peter Schiller scored at 12:59 of the third period this afternoon to give sixth-seeded West Germany a 2-1 upset over third-seeded Czechoslovakia in the first competition of the Winter Games.

Roy Roedger eluded the defense on the left boards and fed Schiller, who broke in on goaltender Jaromir Sindel and sent a backhand shot between the legs. Goaltender Karl Friesen, who faced 30 shots, preserved the victory with several tough saves in the remaining minutes.

Helmut Steiger, who scored the other West German goal, stopped Jiri Hrdina's wrap-wround attempt with Friesen sprawled on the ice in the 14th minute of the period.

Czechoslovakian goaltender Dominik Hasek, considered one of the best in the world, did not play because of a groin injury. Sindel finished with 28 saves. The Czechs won the silver medal at the 1984 Winter Games in Sarajevo.

The West Germans, a team with four Canadian-born players, also beat Czechoslovakia in December at the Moscow Izvestia tournament.

The first round victory puts added pressure on the U.S team, which is expected to contend with West Germany for the third and last medal-round berth in the Blue Division. Czechoslovakia and the Soviet Union are expected to advance.

Hrdina gave the Czechoslovakians a 1-0 lead at 16:01 of the first period with a power-play goal. David Volek spun away from a defender in the slot and passed to Hrdina, who scored from the middle of the right circle.

Steiger tied the score at 5:39 of the second period. Gerd Truntschka won a faceoff from Hrdina, dropping the puck to Truntschka, who slapped a shot over Sindel's glove shoulder from 20 feet.

Goaltending dominated the remainder of the period. Friesen stopped 16 shots, and helped kill three power-plays. Sindel, who seemed shaken after a collision preceding Steiger's goal, scrambled to make seven saves, most of them on good scoring opportunities.