American Sam Querrey caused an upset when defeating second-seeded Kei Nishikori in the second round of the Acapulco International tennis tournament on Wednesday.
In a match lasting 73 minutes, Querrey defeated his Japanese opponent 6-4, 6-3 and will next face countryman Taylor Fritz in the quarter-finals after the 18-year-old hammered Victor Estrella of the Dominican Republic 6-1, 6-3.
Querrey started off well holding his serve then immediately breaking Nishikori’s serve in the second game of the first set but in the ninth game, the American had his serve broken but broke right back to win the set 6-4.
In the second set, things went with serve until Nishikori had his serve broken in the fourth game for Querrey to go on and win the set and match.
In other matches, Australian fifth seed Bernard Tomic defeated Adrian Mannarino of France 6-4, 6-4 and Robin Haase of the Netherlands beat Britain’s Aljaz Bedene 6-4, 6-7(3), 6-4 in a match lasting two hours and 24 minutes.
Bulgarian seventh seed Grigor Dimitrov did enough to get past Donald Young of the US 6-3, 6-4 while Illya Marchenko of Ukraine spent nearly three hours on court to defeat American Ryan Harrison 7-6(3), 4-6, 7-6(5).
In a big upset, Alexandr Dolgopolov of the Ukraine defeated Spanish top seed David Ferrer 6-4, 6-4 and Austrian fourth seed Dominic Thiem had to work hard to get past Dmitry Tursunov of Russia 6-7(5), 6-3, 6-4 in a match lasting just over two hours.