Peyton's fantasy value is dropping

Will Peyton Manning (right) see a fantasy drop-off with Eric Decker no longer in Denver? AP Photo/Ed Zurga

The dust is starting to settle around the league after the first wave of player movement in this year's NFL free-agency period. Upon assessing the adjusted personnel landscape, it becomes clear from a fantasy football perspective that there were three potential quantum shifts whose impact is likely to be felt from now until your fantasy football draft day.

Here's a look at how recent free-agency moves will have a fantasy impact on three of the league's top QBs, including Peyton Manning, Cam Newton and Matthew Stafford.

Peyton Manning will see a significant decline in his fantasy production

Manning is the defending fantasy points champion in large part because of an incredible confluence of positive factors that made up his record-setting season.

Last year, Manning had three wide receivers who were capable of posting WR1-caliber numbers (Demaryius Thomas, Eric Decker and Wes Welker) to go along with a superb pass-catching tight end (Julius Thomas) and a power rushing attack to take pressure off of the passing game. He took this group into a schedule that included matchups against teams from the NFC East and AFC South, a group that had three teams in the bottom seven of the league in quarterback points allowed and had only one club place in the top 10 in that category.