Italy got goals from its two newest starters, Salvatore Schillaci and Roberto Baggio, to beat Czechoslovakia, 2-0, last night in Rome and finish atop Group A after the first round of the World Cup.

The Italians dominated the game for long periods and became the first team to win all three first-round games. They did not allow a goal in victories over Austria, the United States and Czechoslovakia, which also advanced to the second round with a 2-1 record.

Finishing first in the group earned Italy the right to continue to play in Rome.

Schillaci opened the scoring in the ninth minute, heading the ball home after Giuseppe Giannini mis-hit a shot into the penalty area.

Baggio made it 2-0 after a superb solo run through three defenders in the 77th minute.

Italy kept Czechoslovakian goalkeeper Jan Stejskal on his toes with a series of attacks early in the game, then Schillaci drove in his header for his second goal of the tournament.

Nicola Berti came within inches of adding to the lead in the 26th minute, failing to connect after a pass from Baggio.

The Czechoslovakians became frustrated and Jozef Chovanec and Tomas Skuhravy were given yellow cards.

Czechoslovakia's best chance of the first half came in the 44th minute, after Baggio was cautioned for refusing to move back 10 yards for a free kick. Michal Bilek beat the Italian wall with the kick, but goalie Walter Zenga made the save.

He could not save a shot by Stanislav Griga in the second half, but the play was ruled offsides. Television replays indicated otherwise.

West Germany 1, Colombia 1: Colombia, on the verge of elimination from the tournament, got a goal by Freddy Rincon in injury time in Milan to advance to the second round for the first time.

The West Germans were decisive winners of their first two games and appeared to have another victory when Pierre Littbarski scored with two minutes to go. But Carlos Valderrama's pass found a streaking Rincon on the right wing and he put a low shot under goalkeeper Bodo Illgner, who had come out of the net.

West Germany won Group D with five points, followed by Yugoslavia with four and Colombia with three. The Colombians guaranteed their advancement as one of the four third-place teams with a 3-2 goal differential.

Although a tie was enough for both teams to qualify, West Germany and Colombia committed themselves to attacking, even in the final minutes. Littbarski came in on the left wing, took a pass from Rudi Voeller and sent a left-footed drive over the outstretched hand of goalie Rene Higuita.

That appeared to be enough until Rincon broke free.

Yugoslavia 4, United Arab Emirates 1: In Bologna, striker Darko Pancev scored two goals to lead the Yugoslavs into the Cup's second round. The loss eliminated the Persian Gulf nation from the tournament.

Pancev struck once in each half. Veteran Safit Susic and Robert Prosinecki also scored for Yugoslavia. Ali Thani Juma'a scored the United Arab Emirates' only goal. midway through the first half.

It is the first time since 1974 that Yugoslavia has reached the second round of the Cup.