Author Archives: Geoff

About Geoff

Dad, hacker, fantasy sports entrepreneur.

MLB Crystal Ball 2021

Today is opening day, the start of the new season. How will it end up? Using RotoValue player projections for each team, I’ve estimated win totals based on projected runs scored and runs allowed. Here are the standings: AL East … Continue reading

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2021 NBA Projections on RotoValue

I’ve released RotoValue 2021 NBA individual projections. RotoValue projections take into account a player’s NBA statistics, age, position, and their depth chart position (if any) to predict statistics totals. The model regresses all players to a per-position league average, so … Continue reading

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Customizing Projections on RotoValue with RotoValue Analyst

Projections are central to fantasy sports, and RotoValue integrates projections into the site. Pages like Search or Projected Standings have a Source selection, where you can choose which set of statistics to display: the current or past seasons, preseason data where available, and … Continue reading

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Expanded Filtering in Search

RotoValue Search pages used to support filtering by a single pro team or fantasy team, but now that has been extended to support searches filtering on multiple values of these types. Previously you’d need two different windows or browser tabs … Continue reading

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Reviewing the FiveThirtyEight 2018 Election Forecasts

Nate Silver’s fivethirtyeight.com published forecasts of the 2018 mid-term elections, predicting the outcome of races for House, Senate, and Governor. The site also made it easy to download their projection data, and so I’d like to look at their forecasts and … Continue reading

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Reverse Platoon Splits – Before and After

Tom Tango asked someone to see what players with at least a 30-point wOBA reverse platoon split in their first 2500 plate appearances did for the rest of their careers, and Sean Foreman kindly provided split data from his database. So I … Continue reading

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Professional Standings Now Available on RotoValue

RotoValue now also shows professional standings for both MLB and NBA. And, like the fantasy standings pages, you can customize them to any date range you like. So if you want to see how your team has done since a particular … Continue reading

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One Player, Two Kinds of Stats: Handling Shohei Ohtani

This year the Angels signed Shohei Ohtani, the young Japanese star who played both as a pitcher and outfielder for the Hokkaido Nippon Ham Fighters of the Japanese Pacific League. As in Japan, Ohtani is expected to continue to play extensively … Continue reading

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Fighting the Last War

This week’s Riddler at FiveThirtyEight reruns a puzzle initially run back in February. The game is a “war” between two warlords fighting over 10 castles. Each warlord has 100 soldiers, and the 10 castles are worth from 1 to 10 points each. … Continue reading

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#FixTheWin

A few years back Brian Kenney introduced the hashtag #KillTheWin, which still lives on. Baseball fans point out egregious cases of a pitcher getting a win in a game despite pitching poorly. While the win might have been a useful … Continue reading

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