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The NCAA Men's Basketball Tournament is here. March Madness has begun. If you, like so many, are filling out a bracket, there are some things you should know that will help you along the way. Here's our March Madness cheat sheet on how to give yourself the best chance at filling out a winning bracket for March Madness. 

March Madness Bracket Cheat Sheet

- Always bet at least one No. 12 seed to beat a No. 5 seed. Over the last 19 years, there has been at least one 12 over 5 upset 16 times. 

- There are actually more No. 11 vs No. 6 upsets than 12 vs 5. The percentage is 37 percent for 11 seeds to win their first game and 35 percent for 12 seeds. 

- Don't pick a 5 seed to win it all. A No. 5 seed has never won the tournament. 

- Take at least one No. 1 seed to make the Final Four. Since 1985, No. 1 seeds have made the Final Four 41.2 percent of the time. 

- Don't pick all four No. 1 seeds to make the Final Four. Since the tournament expanded to 64 teams in 1985, all four No. 1 seeds have made the Final Four in the same season just once (2008). 

- Pick a No. 1, 2 or 3 seed to win it all. No. 1 seeds have won the NCAA Tournament 21 times since 1985. The next closest is No. 2 seeds with five titles and No. 3 seeds with four titles. 

- The lowest seed to win the tournament is No. 8 seed (Villanova) in 1985. UConn was a No. 7 seed when it won in 2014. 

- Don't pick a 16 seed to beat a 1 seed. Last year was the first time it happened since the tournament expanded in 1985. 

- 8 and 9 seeds are historically 50-50 picks. But if you pick a 9 seed to win, don't expect a second upset. They win only 10 percent of their second games, which is tied for the worst (No. 14 seeds) of any seed with more than one second-round appearance. 

- If you pick a 10, 11 or 12 seed to win their first game, just know they have a 43 percent or better chance of winning their second game, which is surprising because they're usually going against another high seed. 

- Four 11 seeds have made the Final Four, but no 12 seed or above has made it that far. 

- Don't go crazy picking 13-seed upsets. They win only 21 percent of their first games historically. 

- Don't pick a repeat champion (Villanova this year) to go far. Since 2007, no defending champion has made it past the Sweet 16

- Don't pick a Big Ten, Big 12 or Pac-12 team to win it all. Since 1996, those conferences have only produced three champions (one each). 

- Pick a No. 2 seed to lose in the first week. Only 62.5 percent of 2 seeds make it to the Sweet 16. 

- Don't try and be perfect. There's a 1-in-9.2 quintillion percent chance to fill out a perfect bracket

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