Major League Baseball : Rotoman’s Projections

Major League Baseball has been running my player projections for the past five years, usually a set at the end of February and an update just before the start of the season. This year they asked for more categories (doubles, caught stealing, among others) and for a set at the end of January, which I delivered. And then nothing. I was scheduled to deliver an update the first week of March, but in all the busy-ness of things didn’t get to it until last week, when I also finally asked my editor what happened to the first set of projections.

It turns out they’re being used in a game. And now for the first time the Rotoman projections are posted at, along with bid values for 4×4, 5×5, and mixed leagues. There will be an update March 29, for posterity’s (and late drafters’) sake.

New Version of Patton $ on Disk

Support Ask Rotoman Page

A weekend of bug squishing led to the release of an updated and improved Patton $ on Disk.

The program includes updated projections, bid prices from me and Alex Patton for 4×4 and Mike Fenger for 5×5. It is a great program for sorting lists and pricing players in the traditional 4×4 and 5×5 formats. The ease of updating projections and prices, the auction manager with bid values and all that make it useful for smaller mixed formats, too, but the pricing is not adjustable.

There is also an Excel worksheet with all the data available, and text and Word files will be out tonight.

The price: $25.

The Thomas George–Dollar Value Calculator

Fantasy Baseball – Dollar Value Calculator

With the dollar value calculator skulking into the site’s pay section, hidden away like the Rotowire price calculator, an old standby moves on. The Thomas George is a venerable roto site with its own free calculator. It allocates percentages to hitters by percentage, which is not right unless you play in a league that auctions position by position, but a quick runthrough found it to be usefully accurate nonetheless. Maybe you can hack the percentages so that they treat all production equally.

Forecasting 2006 — Tom M. Tango and Marcel the Monkey

The Hardball Times

It has been clear for years that the science of player projection is something of a scam. There is a finite amount of stuff we can know about a player’s performance the next year and a certain amount that is stochastic, random, unknowable. I’ve put the unknowable part at about 25 percent, based on various ways of measuring the accuracy of my expert projections.

This big random component means that the lens of a single season tells us only a little about about a player’s actual abilities. And while we use these small slices to tell us more about the player’s game, as a player ages his game changes. The measures that matter for a 25 year old are different for a 30 year old and different still for a 35 year old. The very smart Tom Tango set out to see how much of the potentially knowable 75 percent he could project using a very raw set of weighted averages building in regressive factors, and writes about it here.