It's important to approach a concept like this with a great deal of trepidation. Ranking fighters is tough enough. Ranking trainers is like stepping into a minefield.
A fighter is properly ranked by what you see him do in the ring, factoring in who he has done it against. But a trainer's real work takes place in the weeks, months and years before the fight and during the frantic one-minute break between rounds.
To properly rank the trainers, one would need to spend a lot of time in a lot of different gyms across the globe. Unable to do that, one falls back on ranking the results of their pupils.
For that reason, there is a strong emphasis on trainers who are currently sending some of the best prepared fighters in the sport into battle. Resumes over the years have been balanced alongside recent performances.
The result is more a snapshot of who has done great work over the past year or so, not an assessment of all-time standing. Some familiar names will go absent from this list. Nacho Beristain is one of the best trainers of this century and could be in the all-time top five.
But with an emphasis on the word "today," he didn't make this list.
Likewise, trainers such as Eddie Mustafa Muhammad, Naazim Richardson, Teddy Atlas and Brendan Ingle remain walking, breathing boxing encyclopedias. But it's important to measure resumes of men like that against the great recent work of trainers such as Peter Fury, Eddy Reynoso, Arnulfo Obando and Anatoly Lomachenko.
As a result, this list combines some well-established trainers with some promising, rising stars.
