On 26 February 2017 Calleros lost by split decision to Tatsuya Fukuhara for the interim World Boxing Organization minimumweight title.
[2] On 18 March 2018 Calleros challenged Ryuya Yamanaka for the World Boxing Organization minimumweight title, losing by 8th round technical knockout.
[3] On 23 October 2020 Calleros fought Julio Cesar Martinez, losing by 2nd-round technical knockout; Calleros was supposed to challenge Martinez for the World Boxing Council flyweight title, but came into the fight overweight.
[5] A few months later, UK Anti-Doping, unaware of his death, banned Calleros for four years due to testing positive to cocaine after his 2023 fight in London Against Galal Yafai.
This biographical article related to a Mexican boxer is a stub.