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  #41  
Old 10-05-2007, 01:51 PM
Ganchrow Ganchrow is offline
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Join Date: May 2007
Posts: 16
Default Re: Teasing NFL With NCAAF

[ QUOTE ]
OK, this is the only part which confuses me - the hedging.

To take a real world example, the Seahwaks/Steelers -6 (not an NCAA game but still appplicable) has a moneyline on Pinnacle of +240/-260. This implies a Steelers win pct of 71.06%.

The over round is only 101.634%.

So if we included this slightly +EV leg (due to limit constraints), it would be useful to hedge by betting Seahawks +240?

For me, this is counter intuitive.

[/ QUOTE ]Yes, in this instance it would be useful to hedge regardless of whether or not the price on 2-teamers were -110 or +100. This will be true even without betting limits.

Through a partial hedge a bettor is synthesizing a shorter odds bet out of two-longer odds bets and of course ceteris paribus, a Kelly bettor will prefer shorter odds bets.

This is somewhat akin to a scenario with two mutually exclusive singles outcomes, only one of which has +EV. If the market as whole is not arb-able, a bettor will only bet on the +EV outcome. If, however, the market is arb-able, then the bettor will always choose to hedge by betting a portion on the -EV.

Example:
2 outcomes
Outcome 1 prob = 50%, odds = +110
Outcome 2 prob = 50%, odds = -111
Kelly optimal stake ≈ 4.5455% on outcome 1

If we change the payout on outcome 2 so that:
Outcome 1 prob = 50%, odds = +110
Outcome 2 prob = 50%, odds = -109
Kelly optimal stake = 50% outcome 1, 50% outcome 2

The bettor will lay half of his bankroll on the -EV bet.
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  #42  
Old 10-15-2007, 03:56 PM
Jazzy3113 Jazzy3113 is offline
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Join Date: Jul 2005
Location: Mergers & Acquisitions
Posts: 1,022
Default Re: Teasing NFL With NCAAF

Never bother with teasing NCAA games. With such a diluted talent pool, immature players in terms of experience, and rapid college environments there is no way there is a positive expectation parlaying the NFL with the NCAA. Aside from maybe a few "big games" in college I feel it a crapshoot when compared to the NFL.

Do a test. DSI offers a 15 pt. 4 team teaser with horrible odds. Fill out a fake one for a month. Pick any three college games. See how many teasers you win.
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