San Martin S.J. lost in the derby against Lanús 1-0. The San Martin team couldn't overcome the rival defense. The match was played on Monday, March 30, 2026, at the Lanús stadium. The result was a penalty goal in the 45th minute. The San Martin team has to keep working to improve their game. The coach of the San Martin team, Juan Pérez, said that his team couldn't take advantage of the opportunities that were presented. The Lanús team remained firm in defense and didn't allow the San Martin team to score more goals. The San Martin team has to keep working to improve their game and overcome their rivals in the future.