Rulas Arreola advertised human growth hormone

Trainer is with Álvarez for Terence Crawford fight

A trainer who is working with Canelo Álvarez advertised ­performance-enhancing drugs for sale, including human growth ­hormone, before he joined the super-middleweight ­boxer’s team, the Guardian can reveal.

Rulas Arreola, also known as Raul Arreola Dosal, has travelled to Las Vegas with Canelo to prepare for a “super fight” with the ­undefeated ­American Terence Crawford on Saturday. It is a contest marketed as a “once-in-a-lifetime event that marks the ­beginning of a bold new era in boxing”.

Arreola says he has never ­recommended, provided or sold any banned substance to any athlete or anybody who was subject to any anti-doping rules.