Both Teams to Score
Definition
A yes/no market on whether both teams will score at least one goal each during the 90-minute match. A BTTS Yes bet wins if the final score is 1-1 or higher (both teams on the scoresheet). BTTS No wins only if one or both teams keep a clean sheet.
Example
Inter Milan vs AC Milan — A Milan derby typically features two high-quality attacks. Our model estimates Inter score probability at 78% and AC Milan score probability at 71%. The joint probability of both scoring is approximately 0.78 × 0.71 = 55%.
If the bookmaker prices BTTS Yes at 1.80 (implying 55.6%), there is minimal edge. At 1.95 (implying 51.3%), the edge rises to +3.7% — worth flagging.
How CalibrSports Predicts This
Our goals model estimates independent scoring probabilities for each team and multiplies them to derive BTTS probability. Because independent goal scoring naturally tends toward BTTS Yes at moderate goal rates, we apply stricter edge thresholds for BTTS Yes than No to avoid systematically over-betting the Yes side.
Key Facts
Outcomes
Yes / No
Minimum goals required
1 per team (2 total)
Settles at
Full-time (90 min)
Model bias note
Structurally favors Yes
Related Terms
Frequently Asked Questions
Does own goal count for BTTS?
Yes. An own goal counts as a goal for the team that receives it. If one team scores only via an own goal, BTTS Yes still applies.
Why is BTTS No harder to win?
A clean sheet requires a full 90 minutes of defensive solidity. Even strong defences concede at rates that make clean sheets less than 40% likely per game. BTTS No is a bet on defensive excellence sustaining for the entire match.
How does BTTS relate to Over/Under?
BTTS Yes guarantees at least 2 goals but says nothing about the total. A 1-1 is BTTS Yes but Under 2.5. Over 2.5 does not require both teams to score — a 3-0 is Over 2.5 but BTTS No. The markets are correlated but distinct.