Tennessee Offensive Strategy: System of a (Third) Down

I am probably the biggest Jim Chaney apologist in Tennessee.  I was there in Laramie when he was the offensive and recruiting coordinator under Joe Tiller and took the Wyoming Cowboys to amazing offensive heights.  Despite fielding teams where virtually nobody would ever get a sniff of the NFL, Wyoming was a terror on defenses, and 50-point outings were not uncommon.  It was an implementation of the passing spread before the spread was even a term, and nobody knew what to do about it.

So when I see the following stats from the Tennessee offense, I become very curious as to what he's doing.  I know for certain that Chaney is aware of everything I'm about to talk about, and that it goes against everything he did at both Wyoming and Purdue.  But as we discussed at great length during the UAB game, the offense is extraordinarily predictable on third down.  And I can't figure out why.

First, let's take a look at the types of third downs we've faced.  Normally I like to break up the yardage in three-yard increments, but since the announcers made a great deal about third-and-six or greater, let's use that.  So here are the third downs, in terms of percentage of occurrence, for the following distances to a first or the goal line:  1-2 yards, 3-5 yards, 6-10 yards, 11-15 yards, 16-20 yards, 21-25 yards, and >25 yards.

  3rd_down_distance_medium

About 2/3 of our third down tries came from 6 yards or further so it should be to no surprise that most of our attempts were passing attempts.  What might be a surprise, however, is exactly how the run/pass splits look for the difference distances.

3rd_down_play_selection_medium

If the ball was only one or two yards from the first/goal line, Tennessee ran more often than passed (which makes total sense).  But anything after that, and the play calling was pass-happy.  In fact, Tennessee was most likely to pass on 3rd and 3-5 yards to go.  Tennessee passed 92% of the time from on 3rd and 3-5, 90% from 3rd and 6-10, and 77% from 3rd and 11-15.  If you consider that a couple of those 3rd and 11-15 calls were to set up field goals or to run clock, then Tennessee is basically a 90% bet to pass the ball on any third down that is more than two yards from the first down or the goal line.

How successful was this strategy?  We know the 3rd and 6+ stats by heart now, but here is the success rate for the various distances:

3rd_down_success_medium

You'd expect reasonable success within 1-2 yards, and indeed Tennessee been perfect when that close.  But UT is at 25% from 3-5 yards out and effectively zero from anything further.  Here are some more facts to chew on:

  • We all know that UT has only converted one 3rd down from >6 yards, but in the last three games, Tennessee has only converted two from greater than 2 yards:  a 3-yarder against Florida and that 6-yarder against UAB.  (The rest were three 1-yarders and one 2-yarder.)
  • Tennessee rushed on 3rd down a total of four times against UT-Martin and five times against Oregon, but only once each against Florida and UAB.
  • Tennessee's rushing attempts against Martin all came late when the outcome was certain.  The first nine attempts were all passes, including when Tyler Bray came into the game.
  • Against Oregon, Tennessee started by rushing for more than passing, but switched to passing once they fell behind.
  • The lone rushing attempt against Florida came on a 3rd and 13 in the second quarter at UT's 31 yard line.  Tauren Poole gained three yards and Tennessee punted.
  • The lone rushing attempt against UAB came on a 3rd and 1 at UT's 28 yard line in the fourth quarter with the score tied at 23.  David Oku gained one yard and got the first.

There are two issues to be addressed in this data. First is to figure out why Tennessee ends up in so many third and long situations.  A part of the answer is due to the false start penalties that changed 3rd and 1 to 3rd and 6, but Tennessee ended up in a lot of long situations even when excluding those penalties.  This goes back to the reality we face:  the team is young and is still growing.  They'll undoubtedly get better, but right now the inconsistency is putting the offense in tough positions.

The second issue is to wonder why Chaney is so quick to turn to passing plays, even when the distance is less than 6 yards to go.  The man may have come from spread systems in the past, but he's become more and more of a pro-style coordinator over the years and is very fond of a strong running game.  I think there are specific reasons that he's avoiding the run in those intermediate distances, but I haven't had a chance to go back through the tape and look for any answers.

And that's where we are, really.  The stats tell us that we're a pass-only team on third down.  But stats tell you where to look; they don't tell you why things happened.  The next step is to ask why, and to wonder if our passing game really is more dependable on third down than our running game, or if Chaney just happens to be locked in a rut.

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