Start With the Numbers

Look: you’re not just tossing dice on the diamond. Pull every ticket, every stake, every win‑loss outcome into one spreadsheet. Raw data is the bedrock; without it, all the fancy analytics are smoke.

Compute Your ROI

Here is the deal: ROI equals (Profit ÷ Total Wagered) × 100. If you’ve staked $5,000 and pocketed $5,600, that’s a 12% return. Anything under 5%? You’re probably chasing juice instead of value.

Factor In Variance

Don’t get fooled by a hot streak. Baseball’s a 162‑game marathon, not a sprint. Use standard deviation to see how wildly your results swing. A high variance score screams “luck” more than “skill.”

Break Down by Bet Type

Line: moneyline, run line, over/under—each line has its own bite. Separate them, calculate individual ROIs, and you’ll spot the sweet spot where your edge actually lives.

And here is why. If your moneyline ROI is +8% while your over/under lags at –3%, reallocate capital. Stop pouring money into a losing lane.

Measure Expected Value (EV)

EV is the long‑term compass. Take each bet, multiply the probability of winning by the payout, then subtract the probability of losing times the stake. Positive EV across a sample of 30+ bets? You’ve got a real edge.

Track Bankroll Management

Never let a single loss drain your whole account. Use a flat‑bet or percentage‑of‑bankroll method and log the exact unit size each day. If you’re consistently betting 5% of your bankroll on each play, a losing streak will barely dent the pool.

Leverage Technology

Look: manual entry is a time sink. Scripts, betting trackers, and even simple Google Sheets formulas can auto‑calc ROI, EV, and variance. Plug in your data and let the numbers whisper their truth.

Benchmark Against the Market

Visit mlbbettingrules.com and compare your ROI to the site’s aggregated averages. If you’re trailing the median, step back and re‑evaluate your strategy before you double‑down.

Adjust and Iterate

Now that you’ve got the metrics, it’s time to prune. Cut the bets with negative EV, tighten bankroll percentages, and double‑down on the lines where your ROI shines. The next day, run the same audit—repeat until the numbers align with your confidence.

Final move: set a weekly threshold. If your net ROI drops below 2% for three consecutive weeks, pause betting, re‑study the data, and only re‑enter when the trend reverses. This single rule will keep your bankroll from evaporating.