The former UFC heavyweight champion just celebrated his 40th birthday in February and is in the midst of a three-fight slump, yet 2018 tied his own personal record for the most active campaign of his entire mixed martial arts career. Not since 2000, the year of his first professional win, did Arlovski compete as many times as he did last year. Two decades into a likely Hall of Fame career, and yet “The Pitbull” is still at it, cranking out four-fight calendar runs with the gusto of a man half his age. Win or lose, that old fanged mouthpiece still means something every few months, and that alone is impressive enough.