SALT LAKE CITY – Alexander Romanov is thinking about a future title shot, but he’s going about it in a rational and realistic manner. The unbeaten Romanov has 15 of his 16 wins by stoppage and is off to a perfect 5-0 start in the UFC against increasingly tough competition, including back-to-back finishes of Jared Vanderaa and Chase Sherman. Saturday at UFC 278, Romanov (16-0 MMA, 5-0 UFC) takes on Marcin Tybura (22-7 MMA, 9-6 UFC) at heavyweight to close out the preliminary card at Vivint Arena in Salt Lake City. It’s the kind of fight that can propel him into the upper echelon of the division. “This is a very big opportunity to show I can fight in the top 10,” Romanov said at Wednesday’s UFC 278 media day. “I have respect for him because he’s a very tough fighter.