In 2013, the GCL Nationals finished their regular season with a record of 49–9. This .845 winning percentage was the highest winning percentage for a full regular season ever achieved by a Minor League Baseball team based in the United States. The only minor league team to have a better winning percentage over a full regular season anywhere in the world was the Toronto Blue Jays 1992 Dominican Summer League team based in the Dominican Republic, which finished at 68–2 with a .971 winning percentage. The Nationals then won all three of their playoff games, defeating the Gulf Coast League Pirates in a single-game semifinal playoff and sweeping the Gulf Coast League Red Sox in the best-of-three league championship series, to become the 2013 Gulf Coast League champions.