Freiburg failed to move into the top three in the Bundesliga when they were held to a goalless draw by lowly Mainz on Sunday. Chances were sparse, with Mainz goalkeeper Robin Zentner saving well from Junior Adamu in the 35th. Freiburg’s Noah Atubolu was also on his guard against Anthony Caci in the 51st and Nadiem Amiri a few minutes later. Freiburg would have risen to third behind Bayern Munich and RB Leipzig with a victory but remain sixth. Mainz are 12th and just two points above the danger zone. Borussia Mönchengladbach host Werder Bremen in the other Sunday game. Bayern beat Union Berlin …