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A decade from now, most of the great college basketball coaches of the past quarter-century will be retired. Bo Ryan has already announced this will be his final season. Jim Boeheim will turn 71 at the start of this coming season and is allegedly retiring in three years. And don't be fooled by Mike Krzyzewski's never-changing hair color; the 68-year-old head coach will almost certainly call it a career within the next 10 years.

But fear not, college hoops lovers, because we'll still have a bevy of outstanding coaches by the time 2025-26 rolls around.

In fact, there are so many great candidates that we had to apply three criteria to narrow the massive field down to just the 20 best coaches one decade into the future.

First, the coach must have a career winning percentage of at least .550. That should be fairly self-explanatory. Kind of tough to be considered one of the best coaches in the sport when you're losing half of your games.

Second, the coach is required to have at least 150 career wins. This was a much tougher pill to swallow, as great young coaches like Archie Miller, Cuonzo Martin, Kevin Ollie, Steve Prohm and Michael White fell by the wayside, but it's hard to be considered one of the best of the best until one is really making a dent in the record books.

ESPN.com ranked the 50 greatest coaches heading into this past season. The top nine coaches on that list currently have an average of 575 career D-I wins. Of the nine coaches, Bo Ryan has the least number of D-I wins with 387, but he also won 353 with a D-III program.

Great as Miller may be, he would need to average 29.7 wins per season for the next decade just to match Ryan's current D-I win total by 2025-26.

The third and final criterion is age. Anyone already over the age of 60 was immediately removed from the list, and anyone already over the age of 50 needs to be pretty darn special in order to make the cut.

After that, the ranking system pretty much boils down to deciding which coaches should be expected to contend for multiple national championships in the latter half of the 2020s.