If you keep the same players in your fantasy football lineup every week, you are going to lose.
Even if you adjust for byes and injuries, you will not be successful until you know how to use the matchups to your advantage.
Some players, like Drew Brees or Arian Foster, are good enough to have a successful day against any opponent. While the players in this next group are close, they are not quite there yet.
Each of these men is likely to have a disappointing week, so find alternatives if they are out there.
Eli Manning, QB, New York Giants
While Eli Manning has developed a reputation for clutch drives in the fourth quarter, that does not help your fantasy team.
He failed to reach the end zone last week and ended with only five fantasy points. In fact, the Giants quarterback has failed to top 13 points in standard leagues in any of the past three weeks. It turns out the whole "Eli is Elite" argument does not translate to fantasy football.
This week, Manning faces the Pittsburgh Steelers, who have allowed a league-low 183 yards per game through the air.
There are certainly worse places to turn at quarterback, but try to find a better one for this week.
C.J. Spiller, RB, Buffalo Bills
Spiller is one of the most explosive running backs in NFL. However, that does not matter if he does not touch the football.
The Bills have been better about getting the running back touches, but he is still only averaging 8.6 rushing attempts per game since Week 3. As long as Fred Jackson remains in the picture, Spiller's value stays low.
In Week 9, Buffalo takes on the Houston Texans, who are especially tough on opposing running backs. They are third in the NFL in rushing yards against and are the only team to not allow a rushing touchdown.
In their last game, the Texans only allowed Ray Rice to total 54 yards from scrimmage with no touchdowns.
Spiller is not in line for a good day against this team.
Andre Johnson, WR, Houston Texans
After a poor start to the season, Andre Johnson is finally becoming part of the offense. Over the last two games, he has 17 receptions for 161 yards.
Unfortunately, this game will result in more ineffectiveness from a fantasy standpoint.
The Buffalo Bills not only have the worst run defense in football, but it is not even close. The unit allows almost a full yard more per carry than the next closest team and has allowed four more rushing touchdowns than the second-worst team in the NFL.
At its core, Houston is a running team and the coaching staff will look to take advantage of this mismatch.
Johnson will not have too many attempts at gaining yards, and his four-game streak without a touchdown will continue.
Arizona Cardinals D/ST
This has been the fifth-highest scoring fantasy defense this season. Unfortunately, it seems like the run is coming to an end.
The Cardinals failed to force a turnover for the first time all year last week. This week, the team has to face the Green Bay Packers, who are always capable of scoring 30 points or more.
After next week's bye, Arizona travels to face the currently undefeated Atlanta Falcons.
It seems that the Cardinals should not only be taken out of your starting lineup, but off your roster altogether. Despite the early success, you should start looking for a new defense to help carry your team.
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