Fantasy football waiver wire, Week 8: Hot players with potential downside

Indianapolis Colts wide receiver Darrius Heyward-Bey tries to catch a pass against the Denver Broncos - Brian Spurlock-USA TODAY Sports

It's Week 7 and fantasy owners have entered bye week mania looking to add replacements to their rosters. There are many players who are hot on the waiver wire lists who could have some potential downside. We bring you the top five list here.

Week 7 of the regular NFL season is in the books and fantasy owners are looking for bye week and/or injury replacements. We bring you our weekly list of players who might be potential waiver wire busts or who have downside. Some of these players may appear in our waiver wire suggestions but this list is designed to simply point out factors that could impact or limit their production.

More waiver advice: Quarterbacks Running Backs Wide Receivers Tight Ends Defense/Special Teams

RB Mike James, Tampa Bay Buccaneers

With the injury to Doug Martin, Mike James becomes the instant starter for the Buccaneers but caution rules the day here. Before he went down, Martin was struggling to produce yardage behind a leaky offensive line. On the year, Martin rushed 127 times for 456 yards and one touchdown. While James could provide a boost, it is unlikely he will bust much of a move behind that offensive line. He does add some value as a receiver, so PPR leagues should take note.

RB Peyton Hillis, New York Giants

With Brandon Jacobs missing time with a hamstring injury, the Giants signed Peyton Hillis to pair with rookie Michael Cox in the backfield. Cox is the more talented of the two but the snap count needs to be watched to see who plays more on passing downs. The Giants backfield is kryptonite to running backs right now as Cox and Hillis are the fifth and sixth running backs to start for the Giants this year. Hillis could be just a fill in while Jacobs nurses his hamstring. He isn't assured of a roster spot.

RB Roy Helu Jr., Washington Redskins

Roy Helu Jr. finished Sunday's game with 11 carries for 41 yards and three touchdowns as the Redskins went into their no huddle offense and didn't take him off the field. By no means is Alfred Morris being relegated to a backup role and he should continue to get the bulk of the carries in Washington. Helu adds value as a receiver but he only caught one pass for five yards Sunday. Morris has rushed 91 times for 472 yards and three touchdowns (5.2 YPC)  while Helu has rushed 31 times for 129 yards and four touchdowns on the year (4.2 YPC). Helu will still be involved but don't expect him to score like this again.

WR Darrius Heyward-Bey, Indianapolis Colts

With Reggie Wayne out for the year with a torn ACL, Darrius Heyward-Bey will be a much bigger part of the Colts offense. He put up decent numbers Sunday after Wayne went down, finishing with four catches for 44 yards and a touchdown. It was his first touchdown pass of the year. Give him credit for stepping up after some bad drops on the season, but he has a catch rate of 50% on the season and a career catch rate of 49%. He had seven targets in Sunday's game and has 34 targets on the year with 18 receptions for 190 yards and one touchdown.

RB Chris Ivory, New York Jets

Chris Ivory got the majority of the carries Sunday for the Jets and Rex Ryan said he decided to stay with Ivory and go with the hot hand. Ivory rushed 34 times for 104 yards but did not find the end zone and was ineffectual in the passing game. Bilal Powell only carried the ball three times for six yards and didn't see the field much. Still, on the year Powell has 90 carries for 366 yards and a touchdown (4.1 YPC) while Ivory has 68 carries for 219 yards and no touchdowns (3.2 YPC) while also nursing a variety of injuries. The hot hand is all well and good, but Ivory has to stay on the field and Powell gives them more bang per carry. Expect the platoon to continue for the Jets.

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