David Martinez is riding high, even though his UFC debut was nearly three weeks ago. After a lifetime build, and sacrifices that included stepping away from a lucrative career as a surgeon, Martinez (12-1 MMA, 1-0 UFC) made a dream come true March 29 at UFC on ESPN 64 when he finished Saimon Oliveira with strikes in front of a raucous Mexico City crowd. Martinez still can’t suppress his smile when he reflects on it. “I was very excited with my performance and very happy I won one of the bonuses,” Martinez told MMA Junkie on Tuesday through a Spanish-language interpreter. “… For me, it’s a dream.