If we're talking in tournament results, it's still Izzo by a decent margin. Coach K: 30 years, 11 Final Fours, 4 National Titles. Izzo: 15 years, 5 Final Fours, 1 National Title. However, Michigan State has been a No. 1 seed only three times under Izzo and they made the Final Four all three times and they've been a top-four seed only two other times (No. 4 in 1998, Sweet 16 and No. 2 last year when they made the title game). Each time Izzo's been a favorite to make the Final Four, Michigan State has and they've also made the Final Four twice as a No. 5 seed. Duke's been a No. 1 seed 11 times, a No. 2 seed another seven times and a No. 3 seed five times. They missed the Final Four five times as a No. 1 seed and only made the Final Four once when seeded lower than No. 2 (and that was as a No. 3). In terms of seed and how the team was expected to do. Izzo: Overperformed five times, played to seed six times, underperformed twice (as a No. 6 and 7 seed) in 13 tournament appearances. Coach K: Overperformed 6 times (though not since 1994), played to seed seven times and underperformed 13 times in 26 tournament appearances. Duke lost in the second round twice as a No. 2 seed and in the Sweet 16 four times as a No. 1 seed. That's six times they lost two rounds sooner than their seed would dictate. So Coach K's teams have done worse than their seed said they would every other time they appeared in the tournament. If we're looking at regular season stuff, then it's tough to tell because then you get into which school can get and does get the better recruits and whether those recruits did better or worse than expected during the season. Obviously Coach K's teams have done a hell of a lot better during the regular season which is why they get a top three seed nearly every year. But my original statement was just about tournament performances and there's no doubt in my mind that Izzo does a better job come tournament time. Izzo's current stretch in the tournament may be about the best stretch of tournament coaching ever. However, that cannot be the only analysis. For one, this is Izzo at his peak. At Coach K's peak, he went to seven Final Fours in nine years and won two titles. It's not as easy to say Izzo has done x in 15 years, he'll do the same x in the next 15 and match/trump Coach K. Coaches have peaks just like players, and Coach K is past his. Izzo has been a better tournament coach over the past 15 years, I'd say, yet Coach K has won more titles and only been to two less Final Fours during that time period. It's also salient that Michigan State was preseason No. 2, while Duke was No. 9. So Duke has a better regular season, Michigan State underachieves (albeit injuries were a factor) and Izzo gets credit for overachieving in the tournament (which they did)? Finally, I know everyone likes to believe Duke is always ridiculously talented -- and they certainly are sometimes, e.g., 1991-92, 1999 -- but that's not always the case. Coach K was extremely successful in the mid to late 80s with what I don't think can be considered overwhelming talent. Same with this year.