In one of the biggest comebacks in the competition so far this season, TD Systems Baskonia Vitoria-Gasteiz took the battle between Spanish powerhouses in the Turkish Airlines EuroLeague Regular Season in Round 17 by downing Valencia Basket 71-70 at Buesa Arena on Tuesday. Baskonia grabbed its second consecutive victory and improved to 8-8 in the standings while Valencia dropped to 10-7.