Chaves made his debut at the age of 22 on 5 July 2008, against fellow countryman Juan José Islas in the town of
Castelli,
Buenos Aires. Chaves won by knockout in the third round. After a string of victories on home soil, Chaves fought obtained the
WBO Latino light middleweight after defeating
Brazilian fighter Uilian Santana Barauna. Chaves made only one defense of this title before winning the vacant WBO Latino
welterweight title against another boxer from Brazil, Daniel Saboia. Around that time, Chaves had his first fight outside Argentina, winning a non-title fight by unanimous decision against Brazilian Edvan Dos Santos Barros at the
Hard Rock Hotel and Casino in
Paradise,
Nevada,
United States. Chaves then returned to Argentina, where he made five successful defenses of his WBO Latino welterweight belt before defeating
French boxer
Ismael El Massoudi to become
WBA Interim
Welterweight Champion on 21 July 2012. Since then, Chaves has successfully defended his Interim title once on 22 September 2012, defeating
Panamanian boxer José Miranda by
technical knockout in the second of twelve rounds. He would lose the interim title in his next fight to American
Keith Thurman. ==Professional boxing record==