Duran started his career aged 18 on March 2011. His career record to date stands at 7 wins and he remains unbeaten. Between March 2011 and September 2014, Duran had his longest winning streak of 7 fights. In his 7 fights, his longest KO streak is 1 fights long.
A successful pro debut for Alexander, Duran showed his superior boxing talent against Julio Pineda, becoming the first person to go the full distance with him. Taking his record to 4 wins, Duran won his next 4 fights continuing his successful career.
John Mosquera was up next for Duran on August 22nd, 2012. Duran continued with his winning streak by beating Mosquera. Duran was the first person to go the distance with Mosquera. Duran fought John Mosquera in 2012, the result was a solid win to Duran. Duran then went on to win again against Alex Saavedra setting him up well for his next pro fight.
Duran then went on to fight and beat Carlos alberto Mosquera on August 3rd, 2013 maintaining his unbeaten record. Showing his class against Mosquera, Duran was the 5th person to go the distance with this opponent. Another win followed for Duran taking his win tally to 5 wins.
On June 4th, 2014 Duran fought and beat Juan carlos Gonzalez (1-2-0) to continue his unbeaten streak. In 2014 Duran fought his next opponent Juan carlos Gonzalez ending in a win for Duran. In a successful fight, Duran was the first person to go the distance with Gonzalez.
The unbeaten run continued with the defeat of Addir Sanchez in his latest fight on September 27th, 2014, taking his winning record to 7 wins. Addir Sanchez was little match for Duran, as Duran became only the 7th person to defeat Sanchez in his most recent fight. The fight went the distance via UD decision.