2% max recommended unless otherwise noted. 1% max recommended for soccer.
Some like taking futures bets. I only recommend allocating 10% in total to all futures bets, placing 0.2 units per bet. In other words, if your bankroll/investment for sports betting is $10,000, you would place $20 per futures bet, and so forth. Here are the official recommended futures bets for this year's NFL at current best odds.
Best Bets
Super Bowl
BENGALS +2200
COLTS +2500
CARDINALS +3500
TITANS +3500
RAIDERS +4000
VIKINGS +4500
PATRIOTS +5000
JAGS +13000
AFC TITLE
JAGS +6600
PATS +2200
RAIDERS +2200
TITANS +1600
NFL TITLE
CARDINALS +1400
VIKINGS +1800
AFC NORTH
BENGALS +185
AFC SOUTH
JAGS +700
AFC EAST
PATS +400
AFC WEST
RAIDERS +650
NFC WEST
CARDINALS +300
PLAYOFF ODDS
CARDINALS YES +125
BILLS NO +400
BEARS NO -550
COWBOYS YES -250
LIONS NO -550
JAGS YES +450
RAIDERS YES +160
VIKINGS YES +100
PATS YES +160
STEELERS NO -425
49ERS NO +175
WASHINGTON NO -185
WIN TOTALS
CARDINALS OVER 9 ½
BILLS UNDER 11 ½
BEARS UNDER 6 ½
BENGALS OVER 9 ½
COWBOYS OVER 10 ½
PACKERS OVER 11 ½
COLTS OVER 9 ½
RAIDERS OVER 8 ½
VIKINGS OVER 8 ½
GIANTS UNDER 7 ½
JETS UNDER 5 ½
STEELERS UNDER 7 ½
49ERS UNDER 9 ½
SEATTLE UNDER 5 ½
WASHINGTON UNDER 7 ½
MVP
MAC JONES +5000
MATT RYAN +8000
BAKER MAYFIELD +8000
LAWRENCE +6000
COUSINS +5000