Coleman Wong Chak-lam pulled off a major upset on Thursday, coming from behind to eliminate the top seed and reach the quarter-finals of the ATP 250 Mifel Open in Los Cabos, Mexico. Hong Kong’s top-ranked player, currently ranked world No 108, rallied from a set down to beat Czech world No 12 Jiri Lehecka 2-1 in the last 16. After holding serve in his opening game, Wong struggled against a dominant Lehecka, dropping the first set 6-1 after being broken twice. In the second set, both players held...