At the 1997 U.S. Classic, Antolin was fourth in the all-around. She was fifth on vault and won the bronze medal on uneven bars and the gold medal on balance beam. At the National Championships, she won a bronze medal on vault and finished 10th in the all-around, 11th on uneven bars, 12th on balance beam, and 16th on floor. She was an alternate for the World Championships team. At the 1998 American Classic, Antolin won silver on uneven bars and bronze on balance beam; she also finished sixth in the all-around, 10th on vault, and 20th on floor. At the National Championships, she was sixth in the all-around. She won the bronze medal on uneven bars and was 10th on vault, ninth on balance beam, and 11th on floor. In 1998, Antolin competed in five international competitions. With Jay Thornton, she finished 11th in mixed pairs at the
1998 Goodwill Games. At the Monte Fiore Friendly Cup in Italy, she won a silver medal in the all-around and gold medals on vault, uneven bars, and floor. At the Como Cup in Italy, she won gold in the all-around. At the Arthur Gander Memorial in Switzerland, she was seventh in the all-around and won the gold medal on balance beam. At the Grand Prix Zurich, also in Switzerland, she won a gold medal on uneven bars and finished fifth on balance beam and sixth on floor. At the 1999 American Classic and Pan American Trials, Antolin was fourth in the all-around. At the
Pan American Games in
Winnipeg, she helped the U.S. win silver in the team competition. At the World Team Trials, she finished second in the all-around. She was named to the World Championships team, and at the
1999 World Artistic Gymnastics Championships in
Tianjin, she helped the U.S. finish sixth. At the 2000 Spieth Sogipa in Brazil, Antolin helped the U.S. win the gold medal in the team competition. This was her last year as a member of the national team. ==College career==