Before Week 6 started, we already saw the craziness and unpredictability of the 2017 NFL season. But on Sunday, everything we thought we knew became something else entirely. Along the way, in a season marked by season-long injuries to some of the NFL's best players, the biggest injury the sport will encounter this year occurred.

But in fantasy sports, just like with NFL teams, we must learn to adapt to the dramatic changes that come and focus on the next week to help keep our team's chances of a postseason berth alive. As we look forward to the upcoming slate of games, we must focus on the next task at hand to improve our rosters. So, let's take a look at this week's waiver wire targets.

Dion Lewis, Running Back, New England Patriots

Mike Gillislee's three-touchdown performance seems like a distant memory. Since Gillislee's strong two-week start to the season when he rushed for four touchdowns and contributed 114 yards, he hasn't found the end zone since and averaged just 44 rushing yards per game. Those numbers alone pushed head coach Bill Belichick to give more carries to Dion Lewis in the past few weeks, then Gillislee delivered the final blow to his stock with a critical fumble in Week 6 against the New York Jets.

Now say hello to Lewis, who can slide into Gillislee's role and contribute in the passing game. It offers New England more flexibility on offense than it has when Gillislee takes the field, so the decision to give more of Gillislee's work to Lewis makes sense. Lewis combined for 105 yards and a rushing touchdown over the past two games, he is earning more touches in this offense going forward. While Lewis doesn't offer supreme upside, he adds solid depth to a fantasy roster for owners in need of assistance at the position and could work his way into fantasy lineups in the near future.

Orleans Darkwa, Running Back, New York Giants

Perhaps New York finally has its featured running back. Against a Denver Broncos defense that shut down some of the NFL's best running backs with ease –  Ezekiel Elliott, Melvin Gordon and LeSean McCoy – Darkwa exploded against them for 117 rushing yards on 21 carries. While fantasy owners previously held hope for Paul Perkins and Wayne Gallman, the feelings might finally be real this time.

For one, Ben McAdoo surrendered play calling duties to offensive coordinator Mike Sullivan. It led to a dramatic change in the touches distributed amongst New York's running backs and Darkwa's performance certainly rewarded Sullivan's decision and likely solidified Darkwa's role heading into Week 7. While a matchup against the Seattle Seahawks might seem worrisome, the Seahawks allowed the seventh-most rushing yards per game heading into their Week 6 bye.

Darkwa is likely the top waive-wire target for this week and fantasy owners should be willing to allocate a top waiver claim or significant amount of their FAAB (20-plus percent) to land his services. If New York commits to him and its offensive line can hold some type of form, Darkwa can be an RB2 given the number of injuries and struggles going on around the league.

D'Onta Foreman, Running Back, Houston Texans

This is a gamble pick for fantasy owners and one that some will not want to jump in on. Lamar Miller is healthy and featured heavily in this offense, so the idea of adding Miller's backup seems crazy. Their stance could be further solidified with Houston on a bye in Week 7, which means fantasy owners could spend a roster spot on a player that they won't be able to start for several weeks.

But we are starting to see a shift in Houston's backfield. Foreman received 10-plus carries for the third time in five weeks and he delivered the best performance of his young career. Foreman showed off his talent on a big 39-yard and finished the game with a 4.9 average yards per carry. Houston invested a third-round pick in Foreman for good reason and each week we see the skills he offers. Foreman is a stash pay for the risky owner and the return could be a top-15 fantasy running back if Miller gets hurt or loses further carries to Foreman.

Nelson Agholor, Wide Receiver, Philadelphia Eagles

Less than a year ago, many seemed poised to write off Agholor's career and label him as a draft bust. Across two seasons in the NFL, the 20th overall pick in 2015, combined for 59 receptions, 648 receiving yards and three touchdowns. While Carson Wentz struggled as a rookie in 2016, many wondered if it would ever click for Agholor and doubted if he would ever escape the mental hurdle of constant drops.

Any doubts about Agholor have now faded into the distance. With the growth shown by Wentz and further improvements in Philadelphia's passing attack, Agholor has stepped up and contributed in a major way. With 20 receptions, 321 receiving yards and four touchdowns through six games this season, Agholor is already on the verge of setting career highs in every category.

He found the end zone in four of six games this season, including touchdowns in his last two games, with 50-plus yards in four games as well. Fantasy owners can no longer deny a wide receiver who averages 8.3 fantasy points per game in standard scoring leagues. if Agholor is still available in your leagues, make sure to pick him up this week. You'll miss him with Philadelphia on the bye in Week 7, but he'll be a great contributor going forward.

Austin Hooper, Tight End, Atlanta Falcons

We all know the tight end position in fantasy is a wild card. At the top you see great production from the elites in Rob Gronkowski, Travis Kelce and Zach Ertz, but the tiers below that offer inconsistency. It's what makes a player like Hooper an attractive target, especially with more bye weeks approaching and Atlanta's bye week in the rearview mirror.

After a quality performance in Week 4, where Hooper hauled in five receptions for 50 yards and gave owners double-digit points in PPR scoring, Atlanta returned from the bye week and increased Hooper's role in the passing game. Even on a Sunday where Atlanta's offense struggled and didn't control time of possession, Hooper saw nine targets and finished the game with seven receptions for 48 yards.

Hooper is an athletic playmaker who can rip off big plays when given the opportunity and given Atlanta's recent struggles, they should seek out every opportunity to create more big plays in the coming weeks. If Hooper continues to see seven-plus targets a game, the opportunity is there for him to be a quality contributor in fantasy. It will come with some down weeks, but Hooper offers plenty of upside for the position and should be considered a top-14 fantasy tight end going forward.