Steeped in the stories of fighters like the great Felix Trinidad and two-weight world champion Daniel Santos, the last Puerto Rican boxer to win an Olympic medal in 1996, the nation's young team is targeting further glory.
Ortiz Marcano, who celebrated his 18th birthday last week, is one of four teenagers in the five-man Puerto Rican squad. The team's fifth member, Middle Weight Enrique Collazo, has already been knocked out of the tournament.
He certainly relished his Olympic debut, arriving in the ring with a huge smile on his face and proceeding to showcase a series of flashy moves as he took apart his opponent, establishing an 8-1 lead within three minutes.
Ortiz Marcano said: 'I was smiling going into the ring and coming out of the ring because that is how I feel and I don't want to change anything. I told my corner they had to keep smiling too. I fought well and I have a lot more to come.'
Spain's world number seven Jose de la Nieve Linares was surprised 14-11 by Carlos Quipo Pilataxi of Ecuador. The veteran Spaniard paid the price for a sluggish first round and struggled to match his opponent's workrate.
Earlier in the Light Fly Weight division, Cuba's Yosbany Veitia Soto scored the biggest win in the competition so far as he overcame Australia's Billy Ward 26-4. Filipino Mark Barriga also looked strong in a 17-7 win over Italy's Manuel Cappai.
At Light Welter Weight, India's Manoj Kumar set up a last-16 meeting with Great Britain's Thomas Stalker after pulling away from Serdar Hudayberdiyev in the final two rounds to record a 13-7 victory.