Stokastic Sims: ROI Boost Vs Projection Vs Cap
By Jake Hari
July 10, 2026
Stokastic Sims: ROI Boost Vs Projection Vs Exposure Cap
The most useful question I get about the Stokastic Sims came in word for word from a subscriber in our daily fantasy sports community: "If I want more of a certain player, is it better to manually boost their projection? Or just ROI boost?" It sounds like a settings question. It is really a strategy question, and the answer is the thing that separates people who steer the Sims from people who wrestle with them. You have three levers for a player's exposure, and they are not three ways to do the same thing. Each one makes a different claim about that player, so picking the right lever is really about knowing what you actually believe. Below is the lever I reach for first, the one case where I put it down for something slower and more powerful, and the third lever most people overuse. That third one is the trap, and I will get to it.
In Summary
- ROI Boost Is The Quick Lever, And My Default. Nudge a player up to force more of him or down to fade, no re-run required. It is the right call when you think a player's range is wider than our median, so it fits volatile, high-ceiling plays.
- Change The Projection When You Genuinely Disagree With Our Median. It is the most powerful lever because it re-grades every lineup off a new number, but it takes time (you re-run) and the sim takes your word for it.
- Exposure Caps Work Best As A Hard Ceiling On One Player. Capping several players at once at a multi-slot position, like two pitchers in MLB, can silently squeeze out good lineup combinations.
- SO: Boost Or Projection? Boost to lean, edit the projection to overrule. If you just want more of a guy you like, ROI boost and re-favorite.
Watch The Video
We walked through the get-more-of-a-player move in a short PGA Sims clip, using a golfer as the example. It is the same logic below, in about ninety seconds. Watch on YouTube.
Three Levers, Three Different Claims
Before you pull anything, it helps to know what each control is actually doing under the hood, because that is what tells you which one fits. The Stokastic Sims build a realistic simulated field with the Contest Generator, then grade your lineups against that field. Every lever below changes that grading in a different way, which is why they answer different questions.
| Lever | What it changes | Reach for it when |
|---|---|---|
| ROI Boost | Nudges a player's simulated ROI up or down; shifts your exposure with no re-run | Your default lean, and the right call when a player's range is wider than our median (volatile, high-ceiling plays) |
| Change The Projection | Edits the median itself and re-grades every lineup | You genuinely disagree with our number on a player and have time to re-run |
| Exposure Cap | Sets a hard ceiling on how often a player can appear | You need a firm limit on a specific player; be careful stacking several caps together, especially at multi-slot positions |
The row worth lingering on is the last one, because it is the one people misuse. A cap looks like the obvious tool for "give me less of these guys," but staff warn specifically against capping too many players at once. Cap several players at a multi-slot position, think two pitchers in MLB or a handful of mid-tier golfers, and you can quietly kill good lineup combinations the sim would otherwise have found. Hold that thought, because it is exactly why the answer to the member's question is almost never the cap.
ROI Boost: The Quick Lever I Reach For First
Start with the one I use most, and the one that answers the member directly. The ROI boost nudges a player's simulated ROI up or down. That adjustment changes how the lineups containing him are favored when you re-favorite, so your exposure tilts toward him (boost up) or away from him (boost down). As we covered in office hours, this is the preferred quick lever precisely because it moves your exposure without a full re-run. You make these tweaks near the end of your process, once you are close to final, so you are not redoing them after every update.
Here is the part that decides when the boost is the right lever. It shines when your disagreement with us is about a player's range, not his median. If you think a rookie or a volatile, boom-or-bust play has a wider spread of outcomes than our projection implies, you do not necessarily think our average is wrong, you think the ceiling is live more often than the field expects. A range opinion, in other words, and the ROI boost is built for exactly that. Lean into those plays without touching the median, and let the sim keep grading everything else honestly.
A Worked Example: Forcing A Player You Believe In
Say the sim has a volatile golfer you love sitting at roughly 11% of your lineups, and you want more of him. As we walk through in the video above, you give him a modest ROI boost and re-favorite, and his exposure climbs, in that clip toward the high teens rather than 11%. Nothing else about the slate had to change. You did not overrule our number and you did not re-run anything. The field around him stayed exactly as realistic as it was before. You simply expressed the opinion "I want more of this range than the field will have," which is the honest version of what you were trying to do.
The same logic applies in any sport. In MLB you might force a stack you believe has a higher ceiling than the median suggests. In NBA or NFL you might lean into a boom-or-bust value play. The move is identical: boost, re-favorite, done. When you only want less of a player, the same lever runs in reverse, and there is a full walkthrough of fading and removing players if the group-fade case is what you are after.
Change The Projection: The Most Powerful Lever
Now the case where I put the boost down. Here is the payoff to the promise up top. When you do not just want more of a player, but you genuinely think our median on him is wrong, edit the projection itself and re-run. This is the most powerful of the three levers because it changes the number every downstream grade is built on. The whole simulation re-computes around your new median, which is exactly what you want when your disagreement is about the number, not the range.
That power comes with one honest caution the staff repeat: the sim takes your word for it. Change a projection and every lineup gets graded on your assumption, so a fat-fingered edit, a 50 typed as a 500, will make every build with that player look elite. When your read is right, that is precisely where your edge over the field comes from, because you are feeding the sim information it did not have. Just re-check big edits before you trust the run. And because a projection change requires a re-run, do it earlier in your process, not as a last-second tweak the way you would with a boost.
Want to dial your own player pool? The ROI boost, projection edits, and exposure caps all live inside the Stokastic Sims (Data + Sims or Sims MAX). New members get 10% off their first Stokastic payment with code SIMLEVERS10. Start here.
Exposure Caps: Best On One Player At A Time
The third lever is the one to hold at arm's length, and now you can see why. An exposure cap sets a hard ceiling on how often a single player can appear across your lineups. Used on one player, it is a clean tool: you have decided you will not go past, say, a certain exposure to a chalk piece, full stop. A perfectly legitimate call.
The trouble starts when people cap several players at once to solve a group problem. Put a cap on two pitchers in MLB, or on several mid-tier golfers in a PGA build, and you tighten the portfolio constraints enough that strong combinations can get squeezed out. The sim's flexibility drops, and builds that would have graded well never make your set, so you end up pruning combinations you never meant to touch. That is the specific thing staff warn about: capping too many players at once, especially at multi-slot positions, because it can eliminate useful combinations. A cap is a scalpel for one player, not a broom for a cluster. When you want less of several players, fade them with negative ROI boosts instead, one per player, and the sim keeps every combination on the table.
SO, Boost Or Change The Projection?
Which lands us back on the member's exact question, now with a clean answer.
The quick rule I use: disagree with a player's range → ROI boost. Disagree with his median → edit the projection and re-run. Want one hard limit on one player → exposure cap. Everything else is a variation on those three.
If you want more of a player, ask yourself what you actually disagree with. If it is his range, you think the ceiling shows up more than the field expects, ROI boost him and re-favorite. That is the fast, lighter-touch lever, and it is the one that took our example golfer from 11% into the high teens without disturbing anything else. If instead you think our median itself is wrong, edit the projection and re-run, and accept that the sim will now grade everyone on your number.
Exposure caps almost never win this particular contest, because "I want more of a player" is not a ceiling problem. Caps are for the opposite instinct, one firm limit on one guy. Match the lever to the belief, and the Sims stop feeling like a settings maze and start feeling like an instrument you are playing. If you want to see how these three sit alongside every other dial, the full Stokastic Sims settings breakdown walks through the rest.
FAQ
Is it better to boost a player's projection or ROI boost him? If you want more of a player because you think his range is wider than our median, ROI boost him and re-favorite, no re-run needed. Edit the projection only when you think our median number itself is wrong, since that re-grades every lineup and requires a re-run.
Does a ROI boost require re-running the sim? No. ROI boosts, and exposure caps, are end-of-process tweaks that do not need a re-run. Re-run when you change a projection or ownership assumption, or the contest pool size.
When should I use an exposure cap instead of a boost? Use a cap when you want a hard ceiling on one specific player. Avoid capping several players at a multi-slot position (like two MLB pitchers), because it can quietly eliminate good lineup combinations. To trim a group, fade each with a negative ROI boost.
How much should I boost a player? Start small and re-favorite to see how your exposure moves, then adjust. In the PGA example above, a modest boost moved the golfer several percentage points; your exact move depends on the slate and the player, so the goal is to land on the exposure you actually want, not to crank it to the maximum.
Which sports does this work in? All of them. ROI boosts, projection edits, and exposure caps work in essentially the same way across MLB, NBA, NFL, and PGA DFS in the Stokastic Sims, even though the plays and stack shapes differ by sport. New to the tool? Start with how to use the PGA Sims or the MLB DFS Sims walkthrough.
Pick The Lever That Matches What You Believe
The reason "boost or change the projection" is such a good question is that it forces you to name what you actually think about a player. A wider range is a boost. A wrong median is a projection edit. A single hard line you refuse to cross is a cap, on one player only. Once you can name the belief, the lever picks itself, and you stop nudging settings at random and start telling the sim something true. That is the whole game, feeding the simulation better information than the field has and letting it grade the room around you honestly.
The controls are all in one place. To dial in your own pool on tonight's slate, new members get 10% off their first Stokastic payment with code SIMLEVERS10. Grab the Sims here.
Stokastic DFS Sims (Data + Sims / Sims MAX) — dial any player's exposure with ROI boosts, projection edits, and exposure caps inside the Stokastic Sims.
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