The School of Odds
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Cobey Fehr v Rosario Romero

2026-10-17 00:10 UTC — MMA

Head to Head

5 sportsbooks (2 in analysis )

Estimated chance of each outcome, according to the model: Interquartile mean (Vetted List)

Cobey Fehr (Local)

Prediction 78.99%1.27fair odd
EV -3.63%
Edge -2.98%
Kelly -16.51%
Growth +0.000%

assuming max odds 1.22

Bookmakers’ predictions’ distribution
78.52%78.99%78.99%79.31%MIN.MEANMEDIANMAX.
Odds’ distribution
1.191.201.191.2284.03%83.47%84.03%81.97%MIN.MEANMEDIANMAX.

Rosario Romero (Visit)

Prediction 21.01%4.76fair odd
EV -3.36%
Edge -0.730%
Kelly -0.933%
Growth +0.000%

assuming max odds 4.60

Bookmakers’ predictions’ distribution
20.69%21.01%21.01%21.48%MIN.MEANMEDIANMAX.
Odds’ distribution
4.354.434.354.6022.99%22.57%22.99%21.74%MIN.MEANMEDIANMAX.

For Head to Head, Interquartile mean (Vetted List) estimates these probabilities: Cobey Fehr (Local): 78.99%; Rosario Romero (Visit): 21.01%. For Rosario Romero (Visit), that estimate is equivalent to fair decimal odds of 4.76. No eligible bookmaker offers odds above that level: the best available odds are 4.60, with an expected value of -3.36%; they do not produce positive expected value.

Sportsbook Odds (5 sportsbooks)

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BookmakerLocal ▼VisitMarginUpdated
BetOnline.ag🎯1.22I 81.97%NM 78.67%EV -3.63%E -2.98%K -16.51%G +0.000%4.50I 22.22%NM 21.33%EV -5.46%E -1.21%K -1.56%G +0.000%4.2%2026-10-15 01:49
FanDuel🎯1.20I 83.33%NM 79.31%EV -5.21%E -4.34%K -26.05%G +0.000%4.60I 21.74%NM 20.69%EV -3.36%E -0.730%K -0.933%G +0.000%5.1%2026-10-15 01:50
Unibet🎯1.19I 84.03%NM 78.52%EV -6.00%E -5.04%K -31.58%G +0.000%4.35I 22.99%NM 21.48%EV -8.61%E -1.98%K -2.57%G +0.000%7.0%2026-10-15 01:49
Grosvenor🎯1.19I 84.03%NM 78.52%EV -6.00%E -5.04%K -31.58%G +0.000%4.35I 22.99%NM 21.48%EV -8.61%E -1.98%K -2.57%G +0.000%7.0%2026-10-15 01:50
Bally Bet🎯1.19I 84.03%NM 78.52%EV -6.00%E -5.04%K -31.58%G +0.000%4.35I 22.99%NM 21.48%EV -8.61%E -1.98%K -2.57%G +0.000%7.0%2026-10-15 01:55
Margin = Margin (Overround) · I = Implied Probability · NM = No-Margin Probability · EV = Expected Value · E = Edge · K = Kelly Criterion · G = Bankroll Growth

Updated is when each book last changed its price, so an older time means the odds simply haven't moved, not that the price is stale. Books not seen in the last ~15 minutes are normally dropped; only if a whole market's feed goes quiet are the latest recorded prices shown instead.