CARSON, Calif. — Marco Bueno scored twice and defending Olympic champion Mexico beat Costa Rica 4-0 Friday night in their Group B opener in CONCACAF qualifying for the 2016 Rio Games. Bueno opened the scoring in the 19th minute, Costa Rica's William Fernandez Gonzalez had an own goal in first-half stoppage time, Bueno connected again in the 77th, and Erick Torres added goal in the 88th. In the first game of the doubleheader, Honduras beat Haiti 1-0. Seeking its 11th berth in the Olympics, Mexico will play Haiti Sunday in Carson and finish group play Wednesday night against Honduras in Commerce City, Colorado. Costa Rica is trying to reach the Olympics for the fourth time and first since 2004. It will play Honduras Sunday in Carson and finish against Haiti Wednesday in Commerce City. The top two teams in the group will advance to the semifinals Oct. 10 in Sandy, Utah. Mainz downs Darmstadt Darmstadt forward Sandro Wagner missed a penalty with the last kick of the game as visiting Mainz won its Bundesliga derby 3-2 Friday. Mainz midfielder Stefan Bell opened the scoring with a header from a free kick in the 15th minute. Eight minutes later Yunus Malli made it 2-0 with his sixth goal of the season. Marcel Heller pulled one back with an outstanding strike in the 27th. The Darmstadt forward had his back to goal, turned one way then another to evade two defenders before hitting a dipping shot into the top right corner. Marco Sailer equalized in the 57th, only for Pablo de Blasis to claim the winner seven minutes later on the rebound after Japan striker Yoshinori Muto's initial effort was saved. Wagner had the chance to claim a draw for Darmstadt when Luca Caldirola went down under Gonzalo Jara's challenge in the fourth minute of injury time, but the forward blazed the ball well over from the spot. Getafe holds Celta Vigo Getafe held Celta Vigo to a 0-0 draw in the Spanish league Friday. Celta began with fast-passing charges forward that forced Getafe goalkeeper Vicente Guaita to save Iago Aspas' close-range shot in the 10th minute. Aspas beat Getafe's offside trap a minute later but his shot bounced off the near post. Argentina defender Santiago Vergini earned a yellow card in the 43rd when he obstructed Aspas' forward pass with his hand, stopping a move which would have left the Celta forward alone facing Guaita. Celta forward Manuel “Nolito” Agudo was unable to improve on his league-leading eight-goal tally when Guaita saved two good shots in the 65th. Getafe broke forward on the counterattack in the 71st but Stefan Scepovic's header bounced off the top off the crossbar. — Agencies