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Sunday, February 22, 2015

2015 IndyCar Preseason Analysis - Who Should Race for Points in 2015?

I want to eventually create a driver-by-driver preview of the 2015 IndyCar season.  I believe the preview will be more interesting (and may be more accurate) if done by comparing a driver’s predicted season performance to the performances of past IndyCar champions.  IndyCar awards championship points after each race based on a drivers’ finishing position.  At the end of the season, the driver with the most points is the champion.  In theory, analyzing past champions will provide a numerical ‘goal’ that a driver must reach to be champion - drivers without a chance of reaching this target are unlikely to win the championship.  There will still be a lot of subjectivity, but I plan to focus on numbers more heavily than a traditional season preview.
I used 2 models to predict how many points the 2015 IndyCar champion will score.  The first considered how many points the champion will earn, on average, from each race.  The second model combined similar finishing positions into groups (for example, 2nd and 3rd, or 6th through 8th) and considered how many times the champion would place in a finishing group.  I explain each method in detail in separate posts, but the key takeaway is that the models predict the 2015 IndyCar champion will score between 546 and 567 points, excluding Indianapolis 500 qualifying.  It's also likely that the 2015 champion will win 4 races.  That's an average of over 30 points per race, which is slightly better than a third place finish in each race.

Very few drivers have a realistic chance to win 4 races and average a third place finish in every race.  Don't get me wrong, there will be plenty of talent in the 2015 IndyCar field. Based on Marshall Pruett's silly season report on racer.com, nearly 75% (14 of 20) drivers who are confirmed to full time rides (and Ed Carpenter) have IndyCar wins on their resumes, but I'd say no more than 5 drivers have a good chance at the title, the sponsor recognition, and 'glory' that champions receive.

Fortunately for non-championship contenders, there is another way to achieve success in IndyCar: win individual races.  Winners receive similar levels of sponsor recognition after the race that a champion does, and the team still gets a significant amount of 'glory'.  Teams also have more chances to win races than championships: each year's one championship is composed of between 15 and 20 races.

While wins are very valuable to non-championship contenders, good finishes that aren't wins are not especially valuable.  Consider these 2 seasons:
1. A season with 1 win, 3 podium finishes of 2nd or 3rd, and a 5th place finish in points
2. A season with 2 wins, 1 podium finish of 2nd or 3rd, and a 9th place finish in points
A team, sponsors, and the driver would prefer the second season to the first.  The team and sponsors get more exposure from the wins than a top 5 championship finish.  A driver at a mid pack team who is looking for a better ride would rather have more wins on his/her resume.  It's easier to convince an aggressive driver to 'tone it down' than it is to teach a slow driver how to drive faster. 

Given the high value of wins relative to other finishes, non-championship contenders should be more aggressive than they typically are.  This aggression should start before the race weekend: non-championship contenders should swing for the fences with the setups they take to the track.  Track time is limited at most race weekends, and a team with a good initial setup has an advantage that can be difficult for others to overcome.  

Teams should also be more aggressive with the strategy choices they make during races.  At road courses, a team that qualifies outside the top 10 probably has little chance of a win if they use a 'normal' strategy.  With so little to lose, these teams should frequently roll the dice and use a different pit strategy than the leaders.  On an oval, slower teams should run a leaner fuel mixture and pit later than the leaders.  If a yellow comes out after the leaders have pitted but before the slower car pits, the slower car may trap the leaders a lap down and gain the lead.  If any of these gambles don't work out, the team hasn't lost much - few people remember who had a bad finish anyways, especially if the car turned fast lap times but lost positions because of a strategy gamble.  

These David strategies are seen in other sports: underdog basketball teams often decide to shoot an unusually high amount of three pointers, a hockey team that's losing will pull its goalie in the final minute of a game, and the Oakland A's focused on OBP and slugging percentage in the early 2000's.

Teams can combat this lack of aggressiveness in several ways.  First, they must make a realistic analysis of their chances to win the championship before the season begins.  A team that's honest with itself and recognizes that a championship is unlikely will have more chances to win races by being aggressive, especially early in the season when other teams might be more concerned about keeping non-existant championship hopes alive.

Teams should also share this analysis with sponsors.  Although sponsors don't want to see their cars have bad results, knowing that some bad days will come along with the chances for more wins (and increased exposure from being off sequence with the leaders) will more than offset the exposure the team would have received from many good but not great finishes.  

Lastly, team owners, executives, and managers need to evaluate crew chiefs and strategists by the thought process that went into their decisions, not just the results of those decisions.  Loss aversion probably impacts IndyCar crews as much as the normal population, and may prevent aggressiveness that would be beneficial to the team in the long run.

In closing, very few drivers should race for points in 2015.  A true championship contender must drive for a well funded team (Andretti, Ganassi, or Penske), and have ample experience winning races on both ovals and road courses.  The fact of the matter is that few drivers fit this profile.  These drivers and their teams would be much better off to aggressively pursue wins in 2015.

If you want to get in touch, feel free to leave a comment or send an email to spottersstand@gmail.com.  Follow the blog on Twitter (@spotstandblog) for reminders about new posts.

Wednesday, February 18, 2015

2015 IndyCar Preseason Analysis - Finishing Group Model

Note: Most posts will rely heavily on data.  Blogger does not always allow for easy integration of chart and tables into posts, so I've made data available in a Google Spreadsheet called 2015 IndyCar Preseason Analysis - Finishing Group Model.

Last time, I tried to predict how many points the 2015 IndyCar champion would score during the season (excluding qualifying for the Indianapolis 500) based on champion points/race data.  In this post, I use a different method to predict how many points the 2015 champion will score.  Like before, data is limited to champions from 2012 through 2014, the years that the DW12 chassis has been used in IndyCar.  Points for qualifying at the Indianapolis 500 and Iowa have been removed from champions’ end of year totals.
I started by collecting the champion’s finishes for 2012 through 2014 (see Chart 1 - Champion Finishes).  I also collected the number of times each champion scored bonus points (by either winning the pole, leading a lap, or leading the most laps in a race).  For 2015, IndyCar will award points for each of these achievements, so it seems worthwhile to include them in the model.  I counted double points races (Indianapolis 500, Pocono, and Fontana, all highlighted in yellow) as 2 races, so the adjusted 2014 schedule had 21 races, even though the real 2014 schedule only had 18 races (double points were not awarded in 2012 or 2013).  Since double points will be awarded at 2 races in 2015 (Indianapolis 500 and Sonoma), the 2015 schedule has 18 adjusted races.

Chart 1 - Champion Finishes

Year201420132012
ChampionPowerDixonHunter-Reay
Total Races211915
Race 1153
Race 22212
Race 35116
Race 48182
Race 581427
Race 6847
Race 71421
Race 82231
Race 9261
Race 1014161
Race 111117
Race 1210124
Race 1310118
Race 141471
Race 159154
Race 16319x
Race 1761x
Race 1812x
Race 19105x
Race 209xx
Race 219xx
For this model, I combined finishing positions into the finishing groups (FGs) listed below.  
  • Wins
  • 2 & 3
  • 4 & 5
  • 6 to 8
  • 9 to 12
  • 13 to 17
  • 18 to 24
  • 25+
I determined the number of times that the champion finished in each FG and earned bonus points (Chart 2 - Champion Finishes/FG), then converted those numbers into percentages of the entire season (Chart 3 - % Champion Finishes/FG).  For example, 2013 champion Scott Dixon finished 4th or 5th in four races, or in 21% of the races in 2013 (4 finishes divided by 19 races).  I then calculated the average percent of the time the champion finished in each FG, and took an average of the percents from each season.

Chart 2 - Champion Finishes/FG

Year201420132012
1344
2 & 3422
4&5141
6 to 8423
9 to 12711
13 to 17230
18 to 24033
25+001
Poles420
Most Lead432
Races lead (excluding wins)842
Chart 3 - % Champion Finishes/FG

Year201420132012Average (DW12)
114%21%27%21%
2 & 319%11%13%14%
4&55%21%7%11%
6 to 819%11%20%17%
9 to 1233%5%7%15%
13 to 1710%16%0%8%
18 to 240%16%20%12%
25+0%0%7%2%
Pole19%11%0%10%
Most Lead19%16%13%16%
Races lead (excl win)38%21%13%24%

Next, I multiplied the average percent of the time the champion finished in each FG and scored bonus points by the 18 adjusted races there will be in 2015.  This produced the number of predicted finishes for each FG (Chart 4 - Expected Results).  From 2012 to 2014, the champion won an average of 21% of the races each season, suggesting that the 2015 champion will win 3.7 races in 2015.  I rounded each predicted finish to the nearest whole number (with one exception) since it’s pretty difficult to win half of a race.  

Chart 4 - Expected Results


Predicted FinishesRounded FinishesPoints/RaceTotal Points
13.74.051204
2 & 32.63.037.5112.5
4 & 51.92.03162
6 to 83.03.02678
9 to 122.73.019.7559.25
13 to 171.51.01515
18 to 242.12.01224
25+0.40.0100
Poles1.82.012
Most Lead2.93.026
Races lead (excl win)4.34.014
Grand Total---566.75


Then I determined the average number of points a finish in each FG was worth.  A win is worth 50 points, and a race winner always gets a bonus point for leading a lap because the race winner always leads the last lap.  Therefore, a win is worth 51 points.  Finishing 2nd is worth 40 points, and finishing 3rd is worth 35 points.  The average of 40 and 35 is 37.5 points per finish in the 2nd and 3rd place FG.  
Finally, I multiplied the rounded finishes in each FG by the average points awarded to that FG.  This model predicts that the 2015 IndyCar champion will score 566.75 points, excluding Indianapolis 500 qualifying.  

I’ll end this post with the same disclaimer from the end of the post explaining the champion points/race model: this model assumes that there will be little performance difference between the Chevrolet and Honda engines and aero kits that will debut in 2015.  If one manufacturer outperforms the other (especially if Honda is superior to Chevrolet), the champion will probably score more than 30.3 points/race.

If you want to get in touch, feel free to leave a comment or send an email to spottersstand@gmail.com.  Follow the blog on Twitter (@spotstandblog) for reminders about new posts.