1. Abel Sanchez
Sanchez has recently become more well known for his work with middleweight monster Gennady Golovkin, but Abel had trainer over a dozen world champions before the Kazakh rocked up to The Summit Gym in Big Bear, California. He transformed Golovkin from an economical and tentative fighter into the most exciting slugger on the planet.
Groves spent time with Sanchez and Golovkin prior to his fight with Jack and while he may not have got the result he wanted, it seems he benefited from his time there – hardly a surprise considering he trained alongside one of the best fighters in the world.
Sanchez offers a wealth of knowledge, great facilities away from distraction and the opportunity for world-class sparring.