BleedGopher
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True, but at this point he also likely has good quality statistics based just off his own team. Plus, if you look as a wide enough swath of games at your level of play the stats can prove to be at least decently predictive. Not perfect (no stat should be considered like that) but at least good enough to safely build a gameplan on until proven otherwise. In this case, it looks like its worked out ok.The obvious flaw with his theory is that the percentages he uses are likely based on a summation of many games and situations between opponents of differing levels of ability.
Therefore, in order to truly understand the risks and rewards of each decision there should be a chart that outlines each decision given the perceived ability of the team you are competing against. I would doubt the statistics are static regardless of the opponent. Additionally, the risks/rewards would also change based on time and score of each game and should be recalculated accordingly along with the percentages.
Other than that, I'm all for the best percentage play.
I've read about him before. I think for high school football, his methods make sense. Rarely do you have a kid that can punt the football or consistently hang a high kickoff that you can pin a team inside the 25 yard line. With an onside kick, you're only giving up 20-25 yards of field position if you fail at the most.
I'm sure he goes for 2 quite often, much to the delight of Lane Kiffin. And in HS, I think this is a good strategy. I'm guessing overall, you could net more points going for two than going for one. Lollipop snaps, not as talented players, etc. etc. etc. An extra point kick isn't as automatic at the HS level.
I've often considered this and have had fun debating the merits of going for it on 4th down with friends. I'm quite sympathetic to Coach Kelly's argument, ....to a point.
As others have pointed out, aggregate statistics are suspect. You aren't playing an aggregate opponent, you are playing a SPECIFIC opponent. To perform this accurately you need to do the analysis for your opponent, and since they are different from year to year it would be tough to build up a statistically significant sample of data. I suppose you could do it by coach (and coaching style), but it's still tough. If you are playing a team with great d, it should influence your decision to punt or not.
That said, I've concluded the simple approach is to 'go for it on 4th down more'. And (at the college level at least) have less faith in your field goal kicker. What's the percentage of Gophers kickers making 40-45 yard field goals the last decade? Coaches seem to behave as if they expect to make those more often than not. I would almost NEVER try one unless it was more than, say, 4th and 5, or time was running out and you needed 3 points.
Interestingly, I have noticed a trend of more coaches going for it on 4th down, so I think this school of thought is catching on. I definitely think it makes it more fun to consider the possibilities...
I used to have a book about football strategy that was published in 1930. I really wish I still had that book. It advocated punting on first down if you had the ball inside of the 10 yard line. Not that I ascribe to an 80 year old strategy, it's just an interesting bit of history.