Archive for Travis Jankowski

Spring is here, and with it comes a renewed sense of optimism for yours truly. The never-ending cold rain and oppressive grayness of my first winter in Seattle is giving way to slightly warmer rain and a lighter shade of gray, and the sun even made an appearance last Tuesday. I’m more excited for baseball season than ever, seeing as I finally live in a major-league city for the first time in my life. Also, WrestleMania and Opening Day — objectively the best two days of the year — land on consecutive days in 2017.

Unfortunately, this time of year also means I get my annual opportunity to make a fool of myself with my Bold Predictions column. The last time I did well with these, I was still in my twenties and The Undertaker’s undefeated WrestleMania streak was intact. I’m not saying that turning 30 (or 31…or 32…) definitively altered my ability to make borderline-crazy-yet-somewhat-possible baseball predictions. However, right around that same time, I developed a bald spot on the top of my head. Without the protective layer of hair, a great many thoughts started escaping my head, and I became much less smart.

What’s changed now? I’m so glad you asked. I recently discovered the incredible Thought Screen Helmet! Originally intended to shield your brain from alien mind-control waves, it turns out that the Thought Screen Helmet not only keeps the aliens out, it also helps keep your thoughts in! Furthermore, the Thought Screen Helmet sports a great track record, with “Only one failure since 1998.”

With my Thought Screen Helmet firmly strapped in, I’m ready to unleash my new and improved Bold Predictions, now featuring occasional accuracy! Hopefully.

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Playing time can make or break a baseball player’s fantasy value. An elite player may not finish above replacement level if he suffers an injury and plays only half the season, and a lackluster player could finish above replacement level simply by playing every single day. This is all intuitive, and the fantasy community generally approaches these kinds of things rationally. In other words, most players are appropriately valued, outside of the market inefficiencies that inevitably warp player values.

One-dimensional speedsters — dudes who steal a bunch of bases and do little else — are much harder to peg. Their value is tied up primarily in one category, as stolen bases (SBs) do not directly correlate with other categories the way home runs would with runs and RBI, for example. The issue becomes all the more confounding when one considers the contemporaneous scarcity of SBs relative to home runs. There’s more to value than just SBs and plate appearances (PAs), but the fact of the matter is the two statistics by themselves correlate very strongly with a player’s end-of-season (EOS) value (which, here, are informed by Razzball’s Player Rater).

In the last five years, baseball has seen 75 player-seasons of 30-plus SBs — 15 steals a year on average, a trend that didn’t fundamentally change in 2016 (although that doesn’t mean SBs aren’t scarce). A simple linear regression of SBs and PAs, the latter of which serves as a proxy for other counting stats such as runs and RBI, against EOS value produces a remarkable 0.71 adjusted R²:

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Without looking, take a guess at who leads the majors in stolen bases per plate appearance. Most of you probably chose Billy Hamilton, and while you aren’t far from being right, you are still wrong. While Hamilton’s pace of swiping a bag in 11.1% of his PA is mighty impressive, someone else is at an even more ridiculous pace of 11.6%. (Author’s note: As pointed out in the comments section by user “Regression is Mean,” Hamilton stole four bases yesterday to bump his rate up to 12.1%.)

Believe it or not, this mystery player is not even owned in 10% of Yahoo or ESPN leagues, as he currently sits at 8% and 9.5% ownership on those sites, respectively. (CBS owners are catching on, as he’s 20% owned on that site.) Who the heck is this player, and why isn’t he on your roster?

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