MEXICO CITY: Mateo Chávez and Julián Quiñones scored in a six-minute span early in the second half, and Mexico beat the Czech Republic 3-0 on Wednesday night to win all three of its World Cup group-stage matches for the first time. The 22-year-old Chávez, in his first World Cup, opened the scoring in the 55th minute and Quiñones scored his second goal of the tournament in the 61st. Alvaro Fidalgo added a goal in second-half stoppage time. Mexico’s previous best group-stage performance was two wins and one draw, done in 1986 and 2002 and both featuring Javier Aguirre, the first as a midfielder and the second as El Tri’s coach.