If you’re serious about EV betting (expected value betting), you can’t afford to ignore the power of optimization. One of the most overlooked tools in your arsenal is the ability to tweak settings in the Portfolio Lab inside Portfolio EV. This is a fully customizable engine for uncovering profitable angles you’d never find scrolling a sportsbook manually. And we’re zeroing in on a killer edge on the best MLB strikeout props today, one of the most popular markets out there.

How to Use the Lab to Find the Best Strikeout Props Today
By default, the Portfolio Lab sets the “OS Rating” filter to 2. That’s a decent baseline for expected value — but if you’re targeting the best strikeout props today, especially on DraftKings, you can do better.
We recently found that while DraftKings strikeout props were barely profitable at the standard setting (+0.83% historical ROI), simply increasing the OS Rating filter to 3 shot the return up to +5.2% hROI — instantly making it one of the most profitable books in the tool for that market.
That’s a massive boost from only one small change.
Why the Best Sports Betting Tools Let You Customize for Value
This isn’t just about one book or one market. The takeaway here is bigger: The best sports betting tools give you control. Portfolio EV rewards bettors who experiment.
Not every market will respond well to filtering. Some are already optimized and increasing the OS Rating could reduce volume without adding much ROI — potentially hurting your bottom line.
So your approach should be twofold:
- Tweak the Lab settings to fix underperforming markets.
- Leave already strong markets alone.
How to Adjust Your Portfolio Lab for MLB Props
- Open the Portfolio Lab
- Focus on a single market (e.g., MLB Strikeout Props)
- Set your book to DraftKings
- Adjust the OS Rating slider up to 3
- Compare your hROI before and after
If you see a clear jump in profitability and manageable bet count, you’ve found your edge. But if the hROI increases are marginal while the bet counts are drastically lower, then don’t go with that change.
Why These Settings Matter for EV Betting
Too many bettors load a tool and run with defaults. But EV betting is all about marginal gains — and those gains compound over time. A +0.83% ROI market is fine. A +5.2% ROI market with the same or better volume? That’s how you scale your bankroll.
When you use Portfolio EV like an investor uses a financial dashboard, you stop guessing and start engineering real profit. That’s what the Portfolio Lab was built for — tweaking exposure, isolating high-value bets, and constructing a betting strategy that grows.
Not Using Portfolio EV Yet?
If you’re not using Portfolio EV, you’re missing out on:
- The best sports betting tools for custom portfolios
- Real-time +EV bets across dozens of markets
- Labs and filters that let you engineer ROI, not just chase it