Best Online Sportsbook Cash Bonuses for March Madness 2018

BetPhoenix is offering a March Madness 2018 free play cash bonus between $100 and $1500 or 150% of your initial deposit (the amount you place into your sportsbook account to bet with). 

Cash bonuses and free plays are essentially the same thing with the later requiring that the designated bonus awarded will only be used to bet with.  In theory those funds can be doubled, tripled, quadrupled.

Like with all online sportsbooks, bonus money is not paid out immediately once you place it in your account.  There are rollover requirements. Sportsbooks are not banks and certainly not in the business of giving away free money for nothing.

Here are the requirements:

    Promotion intended for recreational players only.
    1 Promotion per deposit.
    Valid for residents of the Americas or where authorized by management.
    Promotion available for customers on regular juice lines.
    To qualify a minimum deposit of $100 is required.
    Maximum bonus awarded is $3000 Free Play.
    Regular Free play rules apply.
    This Promotion carries an 16x rollover.
    Rollover is based on Deposit + Transfer fees if any + Free Play winnings.
    This promotion carries a two-week hold.
    Credit card deposits do not apply. (Cash deposits only)
    Casino action does not count towards the rollover.
    Further restrictions may apply.

- Mary Montgomery, Gambling911.com