The Pinnacle Pulse Inside the Wagering Line
PinnacleSports.com
Simon Noble
4/12/2006
The Pinnacle Pulse, a column highlighting betting strategy and line
movement on key games. In this edition, Simon Noble of PinnacleSports.com
discusses handicapping college basketball games before discussing line
movement on a variety of betting options at PinnacleSports.com.
Mr. Noble then gives insight into the early line movement on this
weekend’s big games.
NFL Draft Odds and Betting Information
Although the Super Bowl was played just three months ago, the draft
hasn’t taken place yet and training camps aren’t open, it’s still not
too early to start thinking about the NFL if you play at Pinnacle
Sports!
The season kicks off in less than 5 months from now when the Super Bowl
Champion Pittsburgh Steelers host the Miami Dolphins in a Thursday night
match-up. Pinnacle Sports has already posted lines on every game in week
1 courtesy of our in-house team of odds makers who’ve handicapped the
games and created the lines. But as a player, how does one handicap the
first week’s games and find an edge this far out?
As a starting point, look at the relationship between season wins and
the first week point spreads. An average team would expect to win 50% of
the time or 8 games in a 16-game regular season. In essence, the
expected season wins for a team is just a power ranking.
How many games would you expect a team to win, if it was a 3-point
favorite for each game? First you need to convert the fair no-vig
moneyline (ML) into a "percentage chance of winning" for each game. For
favorites, that is the (ML quote / (ML - 100)) * 100. If the fair no-vig
moneyline for a 3-point favorite is -145/+145, we would expect the
3-point favorite to win (-145 /(-145-100)) * 100 = 59% of the time. If
we knew a team would be a 3-point favorite for every game, we would
expect it to win 16*0.59 games, or about 9.5 games.
Although not a perfect science, you can use this to convert season win
lines into a game line for the first week. For every ½ game better the
favorite is for season wins, it should give up an additional 1 point on
the spread at a neutral site. If a 9.5-win team played an 8-win team,
the 9.5-win team would be a 3-point favorite on a neutral field. After
that, add 3 points for home field advantage, so the 9.5 win team would
be a 6-point favorite at home, or a Pick’em on the road.
Then set a “baseline” using games from the prior year, in this case the
2005-2006 NFL season. While some people will simply start with the
number of games a team won in the previous season, more sophisticated
bettors use the “Pythagorean Theorem” for football. This formula reduces
the affects of lucky and/or close wins, and gives a team more credit for
blowouts and consistently solid performances.
For example, consider the 2005 Tampa Bay Buccaneers regular season
record of 11-5, with 300 points scored for and 274 points scored
against. Instead of simply using their win/loss record, using the
Pythagorean Theorem for football it assumes games won = (PF^2) /
(PF^2+PA^2) * 16, where PF=points for and PA=points against.
Using the Pythagorean Theorem for football, the Buccaneers’ baseline
would be calculated as 300*300/(300*300+274*274) * 16 which gives an
expectation of 8.7 games. This suggests that Tampa Bay was very lucky to
win 11 games and if they played the same season with the same roster, 9
wins would be much more likely.
Conversely using the same formula, we can see that last year Green Bay’s
record undervalued the team. The Packers finished at 4-12, with 298
points for and 344 points scored against. Their baseline would be
298*298/(298*298+344*344) * 16 = 6.9 games, nearly 3 full games better
than their record from last year.
The Pythagorean Theorem is a starting point in your analysis that gives
you a leg up over handicappers who don’t use it. Although originally
derived by Bill James for MLB, its applications have extended across
many sports by changing the exponent (2 for NFL, 1.8 for MLB, and 16.5
for the NBA).
Another adjustment you can make to the 2005 season wins baseline is the
“reversion to the mean”. Basically this means that no matter what a team
does in a previous season, it tends to move toward winning 50% of its
games the following season. Bad teams aren’t quite as bad as people
remember them and the dynasties eventually fade. A general rule of thumb
is to move the baseline season wins about ½ a game toward 8 for
baselines between 5.5-10.5, or a full game towards 8 for very good/bad
teams outside that range.
Once the baseline is calculated, you need to consider roster changes. Is
a team peaking or rebuilding? If a team has several older players
retiring and being replaced with younger, inexperienced players, this
suggests the team could be in a rebuilding stage. Younger players tend
to contribute less in the first few years and in a majority of cases,
the affect of the draft on a team can be ignored and you can instead
focus on trades/free agents acquired. If many starters are inexperienced
at the top level, that team can be expected to fare worse the next year,
but gradually improve afterwards.
If a team’s roster is fairly stable, you generally expect the team to do
as well or better the following year. On teams with a low turnover rate,
the focus of the off-season is to add talented veterans to positions
lacking experience and hope for an immediate impact on the team.
Adding depth (e.g. a journeyman backup QB, or a fourth cornerback) will
have less of an impact, but also lowers the downside variance. A team
that should have put more effort into its backup quarterbacks is the
2005 New York Jets. The Jets fared well in 2004 under Chad Pennington
with a reasonable QB passer rating of 91. In 2005, the 1-1 Jets lost
Pennington and backup Jay Fiedler for the season in the third game. They
won only 3 of the next 14 games with Brooks Bollinger and Vinny
Testaverde struggling at QB, with passer ratings of 59 and 73,
respectively.
Analyzing roster changes is a very subjective matter. For each one
evaluated (some handicappers ignore all changes involving third-string
players or deeper), try to consider how that will affect the team’s
play. If a team has a poor defense and an average offense, defensive
changes will have a bigger impact – the defense simply has more room for
improvement.
Once season win expectations are completed, then set the line for each
game. As in the earlier example, take the difference between the two
teams in season wins, multiply by 2, and add 3 for the home field
advantage. If your numbers suggest a play, we are open for business at
Pinnacle Sports on NFL Week 1. With our 10-cent line on NFL openers,
you’ll even get up to 50% better value compared to other sportsbooks
when they finally get around to posting their NFL openers...
How have the sharps bet the early week 1 NFL openers?
Miami Dolphins +5.5 at Pittsburgh Steelers
We opened the game at Miami +6.5, and took multiple limit bets from
sharps on the dog. If you faded the Super Bowl Champion for the first 2
weeks from 1985 to 2005, you would be 28-13. So any opening number will
draw sharp versus public betting.
Cincinnati Bengals +3.5 at Kansas City Chiefs
Our opener of Cincinnati +2.5 saw moderate lopsided betting on the
Chiefs, driving the number onto and past the “3”. Using the Pythagorean
Theorem, Cincinnati appears to have over-performed in 2005, where 9.5
wins would be more reflective of the team that actually went 11-5. The
early betting tends to agree that the number on the Bengals was too
high.
About PinnacleSports.com
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