By Cliff Rold - Returning from a lengthy layoff due to a shoulder injury, 29-year old former Featherweight and Jr. Lightweight titlist Robert Guerrero (30-1-1, 18 KO) f Gilroy, California, stepped up two classes from his last bout at Lightweight to score a wide but competitive unanimous decision against big punching 28-year old Turkish Welterweight Selcuk Aydin (23-1, 17 KO) of Hamburg, Germany on Saturday night at the HP Pavilion in San Jose, California. Guerrero added an interim Welterweight title to his trophy case, a distinction he also picked up at Lightweight. Both men came in under the 147 lb. limit, Guerrero at 145 ¾ and Aydin at 146 ½. The referee was Dan Stell. After a tempestuous showdown at the weigh-in, both men were staring daggers into each other as they waited for the opening bell. Aydin, as expected, as looking for his right hand while Guerrero was using his speed and straighter shots to score points. Aydin got in with a right early in the final minute and Guerrero took it well. Aydin took a sharp uppercut just as well. Another Aydin right at the thirty-second mark ended in an awkward tie-up. At the bell, Aydin attempted to touch gloves. Guerrero was having none of it.