Career
In the final he defeated Jared Donaldson 6-1, 6-2, 6-4. At the 2013 United States. Open, Altamirano lost to 22-seed Philipp Kohlschreiber of Germany in the first round. Prior to the 2013 United States. Open, Altamirano had only played in six professional-level matches, all at the International Tennis Federation Men"s Circuit level (commonly referred to as Futures), and had lost all six.
Altamirano currently plays with the Babolat Pure Drive racquet and Solinco Tour Bite strings, wearing Babolat Propulse 4 shoes.
2013 United States Open Men"s - Lost in first round to Phillip Kohlschreiber
2013 United States Open Junior Boys" Singles - Lost in Quarter Finals to #1 seeded Alexander Zverev of Germany. Collin was the only American in the Junior Boy"s Quarterfinals.