The NPB King is a research tool for NPB player props. We project a realistic number for every player on the slate, compare it to the posted line, and surface the spots where the two disagree the most. Here's the whole approach, in plain English.
For each player and each stat, we estimate what we actually expect to happen tonight — not a guess, but a number grounded in recent form, the matchup, the role, and the conditions of the game. That projection is the foundation for everything else.
Every prop comes with a line. We compare our projection to that line and to the implied odds behind it. When our number is meaningfully better than the price on offer, that gap is the edge. A bigger edge means a bigger disagreement in your favor.
Not every edge is created equal. We weigh how large the edge is against how confident we are in the projection, then sort each pick into a tier so you can see our conviction at a glance.
Our strongest plays — large edge, high confidence.
Clear edge we're comfortable backing.
A smaller edge worth a look.
Little to no edge — we'd sit this one out.
Most plays are submitted as multi-pick slips, so a single legs page isn't enough. We assemble the day's best combinations — balancing expected value, the chance of hitting, and how the picks relate to one another — and show a recommended stake for each so the sizing stays sensible relative to your bankroll.
Once games finish, every pick we posted is graded — win, loss, or push — and added to our track record. You can see our hit rate and return by confidence tier over time. Nothing gets quietly deleted after the fact.
No. Player props are inherently uncertain, and even our highest-confidence picks lose regularly. The goal is to be right more often than the price implies over a large number of plays — which is exactly why we publish a transparent track record.
The board refreshes through the day as lines and information move, so the projections and edges you see reflect the latest available picture before first pitch.
Power slips pay more but every leg must hit. Flex slips pay less per win but still return something if one leg misses. We build and size both so you can choose the risk profile you're comfortable with.
Treat the recommended stake as a ceiling, not a target, and only ever risk money you can afford to lose. This is an information tool, not financial advice.
The NPB King is for entertainment and informational purposes only. 21+. If gambling is no longer fun, it's time to stop — please play responsibly.