Defence STATS: what’s the bottom line?

Matt Rowley May 21, 2012 15

No GravatarThey say defence wins world cups, or test matches, or tournaments, or something like that. Anyway – defence is important.

So how are the Super teams doing?

Well, the tackle completion stats don’t really tell us too much with 13 teams being within 3% of each other – except that is for the Stormers, who really are that boring solid.

So it would seem we need to delve a little deeper. Obviously one of the key next questions will be where do they miss those tackles?

Take the Crusaders for example, who surprisingly are sitting second last on the completion percentage table. Here’s their ranking for tackles missed in the various zones of the field:

Crusaders tackles missed:

Oppo’s 22 2nd highest missed
Between half way and oppo’s 22 Highest missed
Between half way and own 22 4th highest missed
In own 22 3rd lowest missed

Looks like the ‘Saders will only let you run so far.

Another interesting quirk of the table is with the Highlanders. They also seem to be not so hot on the tackle completion percentage, until you realise that because of the ridiculously large amounts of possession they hold onto, the tackle percentage they miss is worth 1 fifth of bugger-all.

In actual numbers they yield the second lowest misses of all teams in their 22 and give up the fewest clean line breaks. This results in them giving away only 1.6 tries per match – the 3rd lowest in the comp.

Conversely, you look at the Rebels, who have a better completion rate than the Clan, but yield more than twice as many tries. They’re 11th for tackles missed between the halfway and their 22, but then miss the most tackles of all teams in their own 22.

This may be partly because (on average until now) their opposition sees a lot of the ball at the wrong end of the field for the Rebels, but they also yield the second highest number of clean line-breaks and offloads in the comp. This to me says those tackles they’re “completing” are not dominant enough (for the offload to be made), and that there might well be defensive organisational issues on top of that to yield the line-breaks. These things together result in their shocking yield of 3.5 tries per match.

Which brings us to what I think is a more interesting chart above right, for which I have no name because basically its just a few KPIs I threw together. The ‘doh’ part of it is that the top seven teams on the Super ladder are also the seven stingiest when it comes to giving away tries. Go figure, but whatever your overall defensive strategy, that’s the bottom line.

Lima Gill on the bust (photo credit Sportography)

In looking at this chart though, the Reds stick out a mile for the offloads they yield, averaging over 8 conceded per match, where most teams are grouped around 5 or 6.

Could this be due to the “chop ‘em low” strategy the Reds have been engaging to set up their pilfering genius Liam Gill? Perhaps this allows some teams to get the ball free, seen spectacularly when the Chiefs managed 20 in their one game against the Reds (the Chiefs average the most in the comp at 9.5 per match).

And who managed the second highest number of offloads against the Reds so far this season? The Brumbies with 14. What might we see this weekend you wonder?

 

With thanks to Rucking Good Stats for the data

Discussion

  • Duncher

    I love stats but as usual they really only tell part of the story. One would almost swear the Tahs were better team than the Rebels looking at that graph above when clearly the Rebels are better based on their position on the log…

    • Pedro

      The Tahs are just better defensively, while the Rebels are much better offensively. Not that the Rebels are that good offensively, it’s more that the Tahs are just that bad.

    • http://www.ruckingoodstats.com RuckinGoodStats

      Rebels will have really good tackle weeks like missing only 1 in 10.64 attempts (against the Reds) then have shocker (like they did against the Force) miss 1 in everh 4.63 tackle attempts. So it flatterens out. Matt has my entire file and this shows the week by week.

      • http://www.greenandgoldrugby.com/ Matt Rowley (Gagger)

        Yeah, I had the Rebels chart teed up to go but the Force game fucked it

  • No4918

    What happened to RGS? Great input last year and seems to be MIA. Come back please.

    • http://www.ruckingoodstats.com RuckinGoodStats

      I’m here. I give Matt my game stats every week and he is doing the write ups. Doing a good job as well. You can find my live game tweet @ruckingoodstats and I’m doing a lot over time this year, so Tahs kicked the ball on average every 18 seconds they had it etc etc.

      My week looks a little like this at the moment: 4 full game write ups to do a week for clients. These take about four hours each (I haven’t started this weeks lot so I’m way behind). Friday to Sunday is coding games live and trying to fit in some sleep. Thank god the Force are not playing Sat 9:30PM EST that much. Then after the games there is all the reports for the people/media that are run. This includes Matt. Then sleep, then do write ups by Wednesday, then set up games for round and do media stats requests during the week and fitting in my day job, then its Friday.

      Looking forward to the June tests when there are less game to code, but will be more media requests.

      • Pedro

        Keep it up mate, it’s appreciated.

  • Pedro

    I can only tell that the Stormers are the best defensive team in the competition, but I already knew that. I guess the highlanders being among the best is a surprise, goes to show you don’t need to avoid scoring tries yourself to be good at defending.

    • http://www.ruckingoodstats.com RuckinGoodStats

      Highlanders started ot really bad and have tighten up. I thought the idea of them taking the ball up so many times in a game was so they didn’t have to tackle. Highlander are averaging 119.92 ruck/mauls per game and defending 67.58 rucks/mauls their oppositon have been taking into contact. That is a big difference. At one stage it was two rucks/mauls by the Highlanders for every 1 ruck by the opposition.

  • JDog

    Love the breaking down of tackles made in different parts of the field. Crusaders swarm the ball in their 22, balancing out the blatant defensive penalties against their reputation as THE Crusaders. I’d like to see a stat of warnings to yellow cards for each S15 team, just so everyone could see how much “reputation” plays a part in the dishing of cards.

    Think you should redo the Rebel graph and eliminate the massive outlier, known as the DCippers effect.

    • http://www.ruckingoodstats.com RuckinGoodStats

      From my number the Crusaders play different game plans in different parts of the field. Very different.

  • the realist

    I love this website. Thanks again for producing these stats. Keep em coming. I’m surprised at how high the percentages of missed tackles are in general. Just goes to show that even at the elite level we are all human.

    I might play devils advocate though and say missed tackles are like dropped catches in cricket. Some players drop catches because they get their hands to the unlikely catch more than others. (It pisses me off when I get a finger to a rocket through gully that i had buckley’s of getting to and still have to pay the same fine as the fat guy at mid on that dropped a dolly). In rugby terms someone like Elsom I think gets a hand to players when others his size may not (Dagg at the RWC) and if he misses the haters begin to hate. I noticed this week’s Hoopers awful miss gained no such hate. If it were Elsom that had let a halfback run through him to score 1000′s would be on the anti Elsom bandwagon again. anyway i digress

    I also think the percentage of dominant tackles is most important. i remember last year reading the stats on pocock and mcacbe and week in week out they topped the dominant tackle percentages. That for me turns defence into attack. i wonder what the collective stats for each team would be on this.

    • http://www.ruckingoodstats.com RuckinGoodStats

      Great point and the teams have stats on what type of tackle the person make, whether it was effective or teh guy was going to ground anyway etc etc. That make it fairer on the stats and looks for who is effective rather than in the channel.

  • BloodRed

    Would love to see the reds seasons stats split. I’d hazard a guess that a high percentage occurred in the midst of their midfield injury crisis with the majority between half time round 4 (sharks) to end of round 9 (stormers). Either side of that the defence has been pretty good or better than good following the return of A Faingaa. Is it possible to work out where tackles took place in relation to the gain line eg vs the chiefs an enormous amount of tackles seemed to be made well behind the chiefs gain line, forcing passes and offloads to be made short of where they needed to be to be effective. AF may not have made the big hit he was after on SBW but sonny was shuffling the ball on quickly without going to the line (especially the second half) which is quite uncharacteristic and costs the chiefs a lot of momentum.

  • Suzy Poison

    Worth noting, that the Stormers probably have the smallest backline in the comp. Gio Aplon, Dewalt Duvenhage, Juan De Jong, Joe Pieterson are all hovering on the 75kilo mark. Tiny and tenacious?

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