Category Archives: Projections

Comparing Projected HR leaders to actual

Tom Tango asked an interesting question on Twitter yesterday: The odds of the projected HR leader actually leading the league is an interesting question. I’ve been doing projections since 2011, so I thought I’d sweep my database for the RotoValue … Continue reading

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Comparing 2014 Projections – ERA and WHIP

Yesterday I ran comparisons of several projections systems for an all-inclusive batting statistic, wOBA. Today I’m running the same tests, computing root mean square error (RMSE) and mean absolute error (MAE), for two commonly used fantasy statistics, ERA and WHIP. These tests are bias-adjusted, … Continue reading

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Comparing 2014 Projections – wOBA

In the past three years I’ve done reviews of baseball projections systems with actual data for those systems for which I could get data. Will Larson maintains a valuable site of projections from many different sources, and most of the sources I’m comparing are … Continue reading

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RV Current for NBA

Similar to what I’ve done with baseball, I’m now running new projections daily for NBA players under the name RV Current. These projections add current year data into the model, increasing the weight given to the current season as more … Continue reading

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Tracking Injuries…

I’ve just rolled out some enhancements to RotoValue’s handling of injury reports. Now in addition to displaying reports, and highlighting the injury on player searches, I’ve added a new field, called Target Return:

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2015 NBA Projections Take 1

I’ve run the first version of my 2015 NBA Stat projections. There are two versions, RotoValue and AdjRotoValue. My model starts with a weighted average of recent performance, adds regression to a per-position mean, and applies an aging adjustment (very … Continue reading

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2014 Fantasy All Stars

It’s easy to find lists of the best players in fantasy baseball. Lots of people have opinions on the matter, and plenty use formulas and models to rank players. Clayton Kershaw is baseball’s best starter, and was likely the most valuable pitcher … Continue reading

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When the hurling Buehrle’s won… or perhaps why!

Blue Jays’ starter Mark Buehrle is off to a great start so far this season, leading the majors with 6 wins, with an ERA of 1.91. While not as impressive as his ERA, Buehrle’s FIP, fielding-independent pitching, is a still-excellent … Continue reading

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Introducing RV Current

Today I’m introducing a new projections source, which I’m calling RV Current. The idea is to use the same basic projection model I use in the preseason, but also include current year data in the model. The goal is a current … Continue reading

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Improving Future Statistics

While we can’t know the future, we can make educated guesses and projections about it. RotoValue does this by displaying projected stats (both my own projections, and for baseball, projections contributed from outside sources, Steamer, Marcel, and MORPS), and also by … Continue reading

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