Sportsbet website is best we have for Bitcoin betting and great thing about is that you don't have to pay any withdrawal fees for withdrawing coins to your own wallet.
Minimum deposit on Sportsbet is 0.5 mBTC or little more than $30 now.
And the miminum withdraw is :
Minimum withdraw amount: 1,000 μBTC = 1 mBTC
But their is no withdrawal fee so I guess that's sportsbet.io advantage.
Stake.com is another reputable crypto sports bookies that the OP can try as well as they also offered variety of coins for withdrawal/deposit.