With Week 3 in the books, it's time for fantasy managers to turn their attention to the waiver wire ahead of Week 4. Let's take a look at some key targets this week.

Some of these players have been in the NFL for years, others are just scratching the surface of their fantasy potential. These four should make the most of their opportunities this week. (Fantasy stats via Yahoo!Sports)

RB Trey Benson | Arizona Cardinals

Arizona’s third-year running back has 21 carries for a team-high 125 yards and two rushes for over 20 yards over the past three games, while James Conner saw 32 carries before suffering a season-ending ankle injury in Sunday’s 16-15 loss to the San Francisco 49ers.

Without Conner, and only Emari Demercado behind him, Benson should assume lead back d

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