Luck is a major component of winning in fantasy football. But it isn't nearly as important as being informed.

Fantasy owners need to know every little possible detail about the NFL's premier skill position players, including their strengths and weaknesses, injury history, scheme fit and usage. But one aspect that's often overlooked is the big men up front. They're the ones who do the dirty work to allow passing and rushing attacks to succeed.

Below are the eight best and worst offensive lines in the league. Take the time to do the homework on these front fives, and you will instantly become a stronger fantasy owner.

The best

1. Denver Broncos

While the Broncos lost Zane Beadles, they'll get Ryan Clady -- one of the top left tackles in football -- back from a foot injury. Clady's replacement, Chris Clark, played well in his stead and will now move to right tackle, from where incumbent Orlando Franklin shifts to Beadles' spot at guard. I expect all three of these changes to be upgrades alongside Louis Vasquez, a fixture at the other guard spot and one of the best free-agent pickups a year ago. Denver also drafted Michael Schofield, who could possibly play any of the guard or tackle spots in time, at the end of the third round. Peyton Manning makes any offensive line better and inflates the overall production of the unit, but this is a deep group led by two excellent players in Clady and Vasquez.

2. Philadelphia Eagles

The Eagles used the fourth overall pick in the 2013 draft on right tackle Lane Johnson, who has been suspended four games for the use of performance-enhancing drugs. Like the rest of this line, he is an excellent athlete who can play a lot of snaps at a very fast pace. He improved as his rookie season went on. The Eagles have the best group in the league from left tackle to center in Jason Peters, Evan Mathis and Jason Kelce. Age could affect the guard pairing, as we may have seen the best from Mathis and Todd Herremans, but there is no reason to drop LeSean McCoy in your rankings. This is a very solid offensive line.