In every other position on our fantasy rosters, with the exception of kickers, fantasy experts are always talking about having good backups available and playing the match-ups, and it makes sense to do so. Most of them then forsake this advice when it comes to defenses. Again, the key to having a successful fantasy team is to have players, or teams, that are going to start multiple games for your team. While I am all for having a couple of backup running backs with talent on your roster in case an injury occurs, and always want some wide receiver options, I am also for having a second defense on your roster that enables you to play match-ups. First, we know most defenses do better at home, and no matter how good the best defense may be, they still only get eight home games. This may translate to only six home games during the fantasy regular season. We also know that certain offenses struggle each year, and so defenses that get to play these offenses are also good plays. I would argue there are two or three top twelve defenses each year that will not get selected in your draft, and do not become apparent for a couple of weeks every NFL season. You need to be watching for these teams, and be willing to pick them up before your regular defense has their bye week. Also, you need to be on the lookout for when other mangers drop good defenses because of bye weeks. If you did not spend anything on a defense at your draft and someone drops one in the earlier part of the season, go back to understanding their value. If you can get a top five defense that will start for your team 6, 7, 8 or more weeks, it is okay to pay maybe half the price for them as another player, or 15% of your FAAB. The key is to maximize your scoring each week, and if there is a defense that can do this for you, go ahead and pay for them. The difference between using waiver wire funds for defenses during the year is that you are not necessarily costing yourself at another position the way you are in an auction draft. If you drafted well, and avoid injuries, it is very possible you will never need to spend much of your FAAB budget. So, if you see a defense that will help your team multiple weeks, it is okay to pay for one.