A complete tutorial that uses real MLB outcomes from 2024 and 2025 — not made-up scenarios. Draft a 23-man roster, manage the 26-week grind, see exactly which decisions won leagues and which ones cost championships.
Click "Start the Walkthrough" and you'll be dropped into a real 12-team auction draft from the 2024 MLB season. Build a roster. Watch 26 weeks unfold using actual game outcomes. At every key decision — start/sit, FAAB bid, streaming pickup, trade offer — the engine pauses and shows you both paths.
Start the Walkthrough → Read Chapters First12-team auction. $260 budget. AI bidders use real 2024 ADP behavior. Bid at your pace.
Each week resolves with real player outcomes. ~20 seconds per week. Daily lineup choices.
Weekly waivers. 2-start SP decisions. Closer changes. Pause and choose. See both outcomes.
End-of-year breakdown. 5x5 category finishes. Which moves cost you and which won the league.
"What if" alternate timelines. Shareable link for friends. Run unlimited variations.
This is the centerpiece of the POSEIDON Fantasy education system. The full simulator — real 2024 + 2025 MLB historical data, auction bidding behavior, week-by-week category resolution, FAAB warfare, shareable replay URLs — launches with the next Session deploy. For now, read the 5 chapters below to learn the concepts.
Or skip ahead to the MLB Fantasy Hub to explore live projections, tools, and accuracy stats.
The game in one minute. Why 26 weeks of daily decisions makes baseball uniquely demanding. Real-money leagues vs free leagues vs bragging rights. Real examples from 2024 — Witt vs Acuña, Skubal's breakout, Skenes the rookie.
23-man roster. C, 1B, 2B, SS, 3B, MI, CI, 5 OF, UT, 9 P, 5 bench. Why SS is the deepest it's ever been. Why catcher cliffs early. Multi-position eligibility. The SP/RP balance question.
The format question that determines everything. 5x5 categories vs 6x6 (OBP/QS) vs head-to-head each-cat vs head-to-head points. Why your strategy changes 100% depending on which one you're in.
Auction vs snake. The opening five rounds. When to take an ace SP. Position scarcity (catcher, closer). Real 2024 draft hits (Witt R2) vs busts (Acuña R1). Punt strategies that work.
The 26-week grind. FAAB warfare. Streaming SPs vs holding through tough matchups. 2-start pitcher weeks. Innings caps. Closer churn. The active manager edge that wins leagues.
The classic roto categories — HR, R, RBI, SB, AVG for hitters; W, K, ERA, WHIP, SV for pitchers.
Season-long scoring. Ranked across every category. Sum your ranks, highest wins. No weekly matchups.
An SP who's scheduled to pitch twice in a single fantasy week. Double K/W upside, double WHIP risk.
6+ IP and 3 or fewer earned runs. A pitching category that replaces W in many leagues for skill-based scoring.
Picking up an SP short-term for a favorable matchup. Coors avoidance is required. Park factors matter.
How a ballpark inflates or suppresses stats. Coors hits 1.4x HR. Petco hits 0.8x HR. Drives every projection.
Every example, projection, and scenario in these chapters uses real MLB data from the 2024 and 2025 seasons. Player names, statistics, and outcomes are pulled from authoritative public sources and recalibrated against actual sportsbook markets.