As you can see, there's a direct correlation between lower starting
pitcher walk rates and increasing returns for moneyline bettors.
Taking pitchers with low walk rates makes sense, does opponent's
pitcher walk rate matter?
To be clear, this references
the pitchers walk rate for the current season at the time the game was being played.
Not exact matches
An article from earlier this year showed the importance of
walk rate for starting
pitchers, and I wanted to see whether this addition could be applied to when betting day games.
Last week my coworker Andrew Fine explained why bettors should be fading San Diego Padres starting
pitcher Edwin Jackson due to his past struggles, high
walk rate, and steam on their opponent — the Cincinnati Reds.
With a sample size of over 4,000 games, I found that the under had produced a 3.8 % when both
pitchers had a
walk rate of 7.0 % or lower.
Pitchers with an «excellent»
walk rate (less than 4.5 %) had produced a 3.2 % ROI.
Walk rate doesn't need to be the only statistic that you examine before betting on a starting
pitcher, but it's clearly one of the most important.
Although none of these numbers were astounding, it was fascinating to know that simply betting on every
pitcher with an above average
walk rate has been a profitable strategy.
My analysis found that
pitchers with a
walk rate of less than 5.5 % had produced a 2.5 % ROI since the start of the 2005 season.
Going one step farther, I wanted to see whether
pitchers with «great»
walk rates were even more lucrative.
The screenshot below displays the year - by - year performance of the under when both
pitchers have a
walk rate of 7.0 % or lower.
Using the historical archive that powers Bet Labs, I wanted to look at games where one
pitcher's
walk rate was above average (less than 7.7 %) and the other
pitcher's was below average (more than 7.7 %).
At the time of publication, Clayton Kershaw, Josh Tomlin, Noah Syndergaard, Mike Fiers, Zack Greinke and Ricky Nolasco were the only
pitchers with «excellent»
walk rates, with Masahiro Tanaka, Bartolo Colon and Jordan Zimmermann just outside the range.
Specifically, I believed that the under would perform well when both
pitchers had low
walk rates while the over would perform well when both
pitchers had high
walk rates.
Last month my colleague David Solar explained that it is profitable to bet against
pitchers with a high
walk rate.