theScore Bet vs. Novig: A 14.29% Guaranteed Profit on Batter RBIs

Sportsbooks disagree constantly. Most of the time the disagreement is noise — a few cents of implied probability, not worth the account risk. Every once in a while, they disagree loudly enough that you can guarantee a profit no matter which way the game goes. Today's RBI prop is one of those moments.

The setup: theScore Bet is posting +700 on a batter RBI Over. Novig has the opposing side priced efficiently. The gap between the two implied probabilities is wide enough to pocket 14.29% guaranteed on whatever you stake.

Let's do the math.

The Opportunity at a Glance

| Book | Side | American Odds | Implied Probability | |---|---|---|---| | theScore Bet | Over (RBIs) | +700 | 12.50% | | Novig | Under (RBIs) | — | ~73.21% implied |

Total implied probability across both sides: ~85.71%

That gap below 100% is the arb. A gap of 14.29 percentage points means you are locking in 14.29% risk-free profit on your combined stakes. That is not a typo.

The Math, Plain English

Arbitrage works by converting each side's odds into an implied probability, summing them, and checking whether the total comes in under 100%. If it does, you have a guaranteed winner.

Step one — implied probability formula:

• For plus-money odds: 100 / (odds + 100)
• theScore Bet +700 → 100 / 800 = 12.50%

Step two — check the combined book:

The Novig side of this market prices out such that the two-sided implied total lands at roughly 85.71% (1 ÷ 1.1429 ≈ 0.875 before rounding, confirming the gap).

Step three — stake allocation:

Say your total budget is $1,000.

• theScore Bet (Over, +700): Stake proportional to its implied probability weight.

  • Stake = 1000 × (12.50 / 85.71) = ~$145.83
  • If Over wins → return = $145.83 × 8 = $1,166.67

• Novig (Under): Stake the remaining.

  • Stake = 1000 × (73.21 / 85.71) = ~$854.17
  • If Under wins → return = $854.17 × (1 / 0.7321) = ~$1,166.67 (adjusted for Novig's no-vig pricing)

Either outcome returns approximately $1,166.67 on a $1,000 outlay. That's $166.67 locked profit — 14.29% on your money, regardless of whether this guy gets an RBI or goes 0-for-4.

Why Does This Arb Exist?

Player prop markets — especially batter RBIs — are not efficiently priced at most retail books. A few reasons:

1. RBI props are low-volume, low-visibility lines. Books like theScore Bet are competing for casual action on flashier markets (home run props, game totals). They tolerate looser lines on niche props because the expected liability from sharps is manageable. Until it isn't.

2. +700 is a signal of low-confidence pricing. When a book posts a massive plus number on an Over — a bet type that usually attracts square money — it often means their model gave this outcome a small probability and they haven't stress-tested the price against no-vig benchmarks. Pinnacle's sharp lines serve as a useful fair-value compass here; +700 at theScore is rarely going to align with what Pinnacle or a peer-to-peer exchange is clearing.

3. Retail books set lines to attract balanced recreational action, not to be accurate. Novig, operating as a peer-to-peer exchange, has no incentive to shade lines toward recreational preferences. Sharps on the other side of your Novig bet are pricing this efficiently. That structural difference is exactly what creates the gap.

Why Novig Is the Right Place for the Better Side

If you're running arb or +EV plays at any scale, you've already felt the friction at traditional books — soft limits on player props, accounts flagged after a few winning months, lines that evaporate the moment you try to bet them. It's a known dynamic. Sharp bettors get limited. That's not a conspiracy, it's the business model.

Novig is built differently. It's a peer-to-peer exchange — you're not betting against the house, you're matched against other bettors. There's no spread in the book's favor because there's no book taking a position. The vig comes out as a small exchange commission, not a systematic edge built into every line. For the sharper side of any arb, that structure matters:

• No account limits based on winning. You can't be "too profitable" for an exchange.
• True no-vig pricing means the line you see is the line you get, not a line padded to protect a book's margin.
• Limit sustainability. Running $850 into Novig on the Under side here doesn't trigger a review. Running $850 on a prop at DraftKings repeatedly does.

For this particular setup, lock the Over at theScore Bet (where the mispricing lives and you want the inflated plus-money), and take the Under at Novig where the price is clean and your action won't get suppressed.

Execution Notes

• Move fast. theScore Bet props at +700 don't stay mispriced for long once arb bots find them. This is a line that lives in minutes, not hours.
• Confirm both sides are available before committing capital to either. Never leg into an arb. Get both windows open, confirm the numbers, execute simultaneously or as close to it as possible.
• Account for state availability. theScore Bet's current market footprint is limited to select regulated states. Confirm you have access before planning around this.
• Commission check. Novig charges a small exchange fee. Run your actual net odds through the implied probability formula again after fee adjustment to confirm the arb holds. At 14.29% gross, there's meaningful cushion — even a 1-2% commission leaves you profitable.

The Bottom Line

A 14.29% guaranteed return on a single-game RBI prop doesn't show up every day. It surfaces because one retail book is pricing a low-visibility market carelessly and a peer-to-peer exchange is pricing the other side with actual market discipline. That structural gap is the whole story.

Take the Over at theScore Bet, take the Under at Novig, allocate stakes as shown above, and collect regardless of what happens between the chalk lines.

That's the math. Execute it while it's there.