YUMA, Ariz. (KYMA) - San Luis held its letter of intent signing day for senior athletes on Friday, with seven students committing to continue their athletic careers at the collegiate and professional levels. Among the signees was basketball standout Martin Tapia, who will skip college and play professionally with Los Colorados de San Luis in Mexico. “I’m very excited for my new chapter in Mexico... It’s a professional team, so I’m very excited f…