Tomas Ostrak scored his first goal this season in the 83rd minute to help St. Louis City beat the short-handed Colorado Rapids 1-0 on Saturday night for their fourth win in a row. St. Louis (7-6-4) is unbeaten, with six wins, in its last seven games. Rob Holding was shown a straight red card in the 12th minute and the Rapids (6-10-1) played a man down the rest of the way, his second straight game against St. Louis with a red for denial of a goal-scoring opportunity.