@supercoach said:Interesting interpretation of stats. I am still great believer in most of the time you make your own good luck and good sides can use bad luck and turn it into a positive. Also looking at one year to another so many things change like coaches and players.
Anyway you put a hell of a lot of work into your post and maybe you are onto something
Not to start a fight, but I think it's an interesting discussion…
The thing is, the data doesn't back up the idea that teams make their own luck - because there simply isn't a team that consistently outperforms in close games. Granted, what I have is a small sample size - three seasons of data - but the overall results are pretty close to random.
For instance, I bet you that if you asked the average NRL fan to name a team that is really good at winning close games, more often than not they'd guess the Storm. They'd remember Cronk and Smith field goals, the after the siren try against the Dragons last season, and the general air of a well-drilled team that 'knows how to get over the line' or whatever. And yet, if you look at the Storm over three seasons they have barely won more than they've lost in close games. They outperformed this season, but they don't do so consistently.
Is it true that the Storm are a very good side that rode a relatively lucky season in close games to the minor premiership, or is their record in close games this season something they have been able to do themselves to improve on their 2015 record? I'd say almost certainly the former. If you look at other recent top-two sides, actually they don't tend to have especially good records in close games. In both 2014 and 2015, the Roosters came top but actually lost one more close game than they won. The Broncos came second last year with a 2-2 record in close games, while Manly came second in 2014 with a (good/lucky) 6-2 close game outcome.
Granted, none of these teams won the grand final: the Cowboys won last year after a 7-2 record in close games BUT Souths won in 2014 after going 1-5 in close games during the season.
All this tends to support the view that once you get a game to +/- six points either way it is more or less a lottery which team wins. And the useful takeout for, say, punters is that if a team does especially well or badly in close games in a season the likelihood is they won't be able to repeat it the following year.