YUMA, Ariz. (KYMA, KECY) - There was plenty to celebrate at Southwest High School on signing day, but for Southwest senior Johrden Niebla, the moment meant more than just putting pen to paper. After years of hard work, injuries, and perseverance, Niebla officially committed to continue his baseball career at Point Loma Nazarene University — fulfilling a dream he says he’s had since he was a little kid. “Everything really,” Niebla said. “Everythi…