RotoHound
Sign UpYahoo Fantasy Baseball Trade Analyzer
Import your Yahoo league and score any trade in projected standings points under the league’s exact scoring. Rosters, settings, and standings come straight from Yahoo.
Free for the 2026 season. Works with Yahoo, ESPN, CBS, Fantrax, Ottoneu, NFBC, OnRoto, RTSports, and Fleaflicker.
On another platform? Rosters, settings, and standings pull in automatically:
How the Yahoo import works
Connect your Yahoo account and RotoHound reads your leagues through Yahoo’s Fantasy Sports API with read-only access. Pick the league, and every team’s roster, the scoring settings, the roster slots, and the current standings come in. RotoHound never writes to Yahoo: lineups and transactions stay where they are. If you would rather not connect the account, the RotoHound Chrome extension imports the league from your signed-in Yahoo tab instead.
Trade impact in standings points
Pick the two teams and the players on each side. RotoHound applies the trade to both rosters, rebuilds each lineup, and recalculates the projected league standings. The result is the number of standings points each side gains or loses, so a trade offer becomes a concrete number instead of a gut call.
Category-by-category breakdown
Every scoring category shows its before and after. You can see which categories the trade helps, which it costs, and how the rest of the league moves around you. Points leagues get the same treatment in projected points.
What RotoHound reads from a Yahoo league
Yahoo’s scoring settings import as they are: rotisserie or head-to-head, standard categories, Yahoo points, or a custom set. Snake and auction drafts are detected, the weekly or daily lineup deadline sets how RotoHound projects your lineups, and the default Yahoo roster (C, 1B, 2B, SS, 3B, three OF, two Util, two SP, two RP, four P, five bench, four IL) is the starting preset, adjusted to whatever your league actually uses.
How it works
1. Import your Yahoo league
Connect your Yahoo account, or import from your signed-in Yahoo tab with the Chrome extension. Rosters, settings, and standings pull in automatically.
2. Stage the trade
Pick the other team and the players moving each way.
3. Read the impact
Projected standings points gained or lost for both sides, with a category-by-category breakdown.
Frequently asked questions
Does RotoHound need my Yahoo password?
No. Connecting goes through Yahoo’s own sign-in page and grants RotoHound read-only access to your fantasy leagues. The connection can be removed from RotoHound at any time.
Can I refresh the league during the season?
Yes. Refresh from Yahoo pulls current rosters and standings again, and RotoHound keeps the lineup rules and any settings you adjusted by hand.
How does RotoHound score a trade?
It applies the trade to both rosters, rebuilds each team’s lineup, projects every team’s rest-of-season stats, and recalculates the league standings. The score is the change in projected standings points for each side, using your league’s exact categories or point values.
Does it work for points leagues and head-to-head?
Yes. RotoHound models rotisserie and head-to-head leagues, category and points scoring, and custom formats, including platform presets for Yahoo, ESPN, CBS, and FanGraphs points.
Where do the projections come from?
RotoHound publishes its own rest-of-season projections, updated daily. You can also upload projections from FanGraphs or any other source, and every tool uses whichever system you set as your default. The methodology page explains how the built-in projections are made and how they benchmark against Steamer and ZiPS. Read the methodology
Is RotoHound free?
Yes. RotoHound is free for the 2026 season with a free account.
Import your league
Free for the 2026 season. The Trade Analyzer opens with your league loaded as soon as the import finishes.
Trade Analyzer for other platforms
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