He represented his parents' homeland Peru at the 2008 Summer Olympics and has currently owned Peruvian records in both the 100 and 200 m butterfly.
While residing in the United States, Crescimbeni claimed the 2007 Florida High School state championship title in his signature events, and later served as a member of the Florida Gators swimming and diving team under head coach Gregg Troy.Crescimbeni competed as Peru's lone male swimmer in the 200 m butterfly at the 2008 Summer Olympics in Beijing.
He scored a ninth-place time in 2:01.09 to clear the FINA B-cut (2:01.80) at the 2007 Pan American Games in Rio de Janeiro, Brazil.
Swimming in heat one, Crescimbeni held off a hard-charging Javier Hernández Maradiaga of Honduras by a tenth of a second (0.1) to snatch the third spot in 2:02.13.
Crescimbeni failed to advance to the semifinals, as he placed forty-first overall in the prelims.