Brad Gilbert beat Leonardo Lavalle, 6-4, 6-4, 3-6, 6-4, Friday night to pull the United States into a 1-1 tie with Mexico in a Davis Cup quarterfinal series at Mexico City.
In an earlier match, Mexico's Francisco Maciel upset Tim Mayotte, 2-6, 13-11, 6-4, 6-4.
Although he lost in the third set, the more experienced Gilbert had little trouble with Lavalle in the second match.
In the first match, Mayotte dominated the first set with a powerful serve and appeared headed for victory until his serve failed him. He committed eight double-faults.
Maciel took advantage of the double-faults to break through in the marathon second set, which lasted 24 games.
The two appeared to tire in the third set, which Mayotte led, 2-0, but Maciel got a lift from the crowd of 8,000 at the 19,000-seat Sports Palace and breezed to victory.
In other Davis Cup matches, defending champion Sweden got victories from Mats Wilander and Joakim Nystrom to take a 2-0 lead over Italy; Australia won both its singles matches over Britain, and Czechoslovakia took two straight from Yugoslavia.