Jordan Rosenblum
Author Archive

Jordan Rosenblum

Jordan is an American living in Finland. In addition to writing for The Dynasty Guru, he's a doctoral candidate at Åbo Akademi researching explanations of income inequality, and a Workforce Strategist at OnWork Oy. His favorite baseball area is quantitative analysis of prospects.

Fun fact about Finland: they play pesäpallo here, which is like a soft-toss version of American baseball, except home runs are somehow outs.

2019 Dynasty Baseball RankingsDynasty Prospect Rankings

Background The Dynasty Guru updates its peak performance leaderboards weekly. View the latest update here (updated through June 13th). The leaderboards present peak MLB wOBA for all players, minor and major leaguers. Peak MLB wOBA takes 2019 minor league wOBA and adjusts it downward to an MLB baseline (for example, a .400

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Prospect Talk

The Dynasty Guru updates its peak performance leaderboards weekly. View the latest update here (updated through last week’s games). The leaderboards present peak MLB wOBA for all players, minor and major leaguers. Peak MLB wOBA captures league difficulty, adjusting minor league performance from each league to the same major league baseline.

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Current EventsDynasty Baseball

One month of baseball is in the book; enough for walks and strikeouts to become 50% reliable for pitchers, or at least 50% reliable indicator of past talent. As Eno Sarris highlighted in his recent starting pitcher rankings update, velocity, and strikeout minus walk rate are two indicators fantasy baseballers

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Vladimir Guerrero Jr.
Dynasty Prospect Rankings

In early April, The Dynasty Guru released a tool for translating minor league statistics to MLB equivalent statistics, also demonstrating their predictive validity for projecting 2019 performance. In March, we released a four–part aging curves series leveraging a new twist on the delta method. Now, we’ve combined those two projects to

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Dynasty Baseball

See an introduction for the calculator here. To use the calculator, click the link below: https://onedrive.live.com/embed?resid=DBCFA1E2BADF7DEF%2116236&authkey=%21AKJjD0PnNXWzMu8&em=2&wdAllowInteractivity=False&AllowTyping=True&Item=%27Calculator%27!A1%3AX30&wdHideGridlines=True&wdInConfigurator=True

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Digging for DiamondsDynasty BaseballDynasty DynamicsProspect TalkWhat To Do About...

Making sense of minor league statistics is hard. One has to be very familiar with historical performances in different leagues, and how performance evolves after leagues change, to form an intuitive expectation of how minor league performance translates to the MLB level. Major league equivalencies (MLEs) make interpreting minor league

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Bold PredictionsDynasty BaseballDynasty Dynamics

Getting Practical Throughout this four–part aging series, my editor has begged me to get my head out of the clouds in considering aging, asking me to move beyond a research mindset to make some actual, tangible predictions that can help readers win their fantasy leagues in 2019 and beyond. I’ve

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Juan Soto
Digging for DiamondsDynasty BaseballDynasty DynamicsProspect Talk

Part one of this series summarized a novel twist on the delta method to understand player aging, with estimated missing seasons to correct for selection bias. Part two presented the main findings of the delta method: players peak between 26 and 29; they experience substantial growth over their careers in all

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2019 Dynasty Baseball RankingsBold PredictionsDigging for DiamondsDynasty BaseballDynasty DynamicsWhat To Do About...

Despite a scorching hot stove (I can’t believe the player you’re thinking of did or did not sign with the team you thought they would!), January and February can be some of the darkest months of the year (figuratively and literally). But fear not, restless readers. The Dynasty Guru is

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Dynasty BaseballDynasty Dynamics

Fantasy baseball, generally, cares little for age past a minor concern of whether an older superstar is going to fall off of his cliff this season or the next. Dynasty baseball, on the other hand, cares very much about age; be it concerning how soon the hot young prospect will

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