Star Boxing’s Curtis “Showtime” Stevens (21-2, 15) showed why he is one of the most feared super middleweights in the world, with a sensational third round TKO over previously unbeaten Piotr Wilczewski (22-1, 7KO). Stevens came out in the first round firing, eventually dropping Wilczewski hard with a right uppercut. Luckily for Wilczewski, the end…