Snake drafts
Human-first picking with a configurable pick clock. Sort the live card pool by AVG, OPS, HR, ERA, WHIP, K and more.
Timeless Baseball League · free simulator
Free fantasy baseball simulator
Draft real single-season legends. Simulate head-to-head matchups. Wake up to box scores.
TBL is a free fantasy baseball simulator that replays history. Every plate appearance blends the batter's actual rates, the pitcher's actual rates, and the era-adjusted league average through a log5 odds-ratio engine. No randomness for show — just deterministic, seeded baseball.
See the odds math
2001 Barry Bonds versus 2000 Pedro Martinez, blended with log5 against the era-adjusted league average. Take a swing — no account needed.
- Ball in play, out34.4%
- Strikeout30.0%
- Walk15.3%
- Home run8.7%
- Single5.3%
- Double3.6%
- Hit by pitch2.6%
- Triple0.2%
What you can simulate
Head-to-head categories
Eleven rotisserie-style categories decide each weekly matchup. Win more categories than your opponent and take the week.
Nightly auto-sim
At 3:00 AM Eastern the league advances on its own. Wake up to a fresh box score and an updated standings race.
Waivers & trades
Swap cards on the waiver wire under commissioner rules, or trade with other owners through a confirm-and-accept workflow.
Playoffs & awards
The top seeds meet in a single-elimination postseason bracket, while power rankings and season awards keep the narrative going.
How it works
1 · Pick a card era
Commissioners choose 1985+, 1990+, or 2000+. A tighter era means more familiar names; a wider era opens the vault.
2 · Draft your roster
Snake draft real single-season cards. Fill your lineup and rotation while the live pool shrinks.
3 · Wake up to box scores
The sim plays one game a night. Check the morning result, adjust your lineup, and chase the category race.
Why historical stats?
Every card is a real single-season performance from 1985 to the present, drawn from the top 200 players each year. The simulator does not guess — it replays. A 2001 Barry Bonds card carries the walks, power, and strikeout rate he actually posted that season, adjusted against the league average of the era he is dropped into.
Common questions
- Is the fantasy baseball simulator free?
- Yes. Timeless Baseball League is a free hobby project. The solo sandbox runs without an account, and multi-owner leagues are also free to create and join.
- Can I play with friends?
- Yes. A commissioner creates a league, sets the rules, and shares a join code or invite link. Up to 12 owners can draft and compete in the same league.
- What seasons are available?
- The card pool includes the top 200 players from every season since 1985, with optional filters for 1990+ or 2000+. Each card is a real single-season performance, era-adjusted against league average.
- How are games decided?
- Every plate appearance uses log5 odds-ratio blending of the batter's rates, the pitcher's rates, and the era-adjusted league average. The sim runs through a 24 base-out state model and produces box scores, standings, and category races.
Ready to run your own league?
Start a league in minutes, invite owners with a join code, and let the simulator play one game every night.