Fantasy Football waiver wire adds and drops following Week 7

The fantasy football season continues to heat up with the midway point of the NFL season approaching.

Unfortunately, we're starting to see more and more players' bodies begin to break down and suffer significant injuries. Texans running back Arian Foster was the most notable player to suffer a major injury in Week 7. We're also starting to see some key guys like Ben Roethlisberger returning to action after a brief absence.

With that said, it's time for our weekly look at the fantasy football waiver wire additions and subtractions you need to be making.

Adds

Vikings WR Stefon Diggs
There aren't many wide receivers on a bigger hot streak than Stefon Diggs. The Vikings' receiver is now up to 19 catches for 324 yards since being activated for the first time in Week 5 at Denver. Against the Lions in Week 7, Diggs caught six passes for 109 yards on nine targets and his first NFL touchdown. The touchdown came on a 36-yard reception as he got behind the Lions' defense and Teddy Bridgewater found him wide open in the end zone.

Diggs managed to get in the lineup thanks to Charles Johnson's rib injury in Week 5 that led to Diggs being activated after being a gameday inactive from Weeks 1-4. Even with Johnson back in the lineup Sunday, Diggs was clearly Bridgewater's favorite target, and he's a must-add going forward.

Chiefs RB Charcandrick West
The Chiefs expected Charcandrick West to step up and take over the No. 1 running back role once Jamaal Charles was lost for the year. He didn't get off to a good start last week against the Vikings, totaling just 39 yards on 10 touches. West finally broke out against a decent Steelers defense this week, rushing for 110 yards and a score on 22 carries while grabbing two passes for 19 yards.

It's also worth noting that Knile Davis, the presumed backup behind Charles coming into the season, has just nine touches for 27 yards in his last three games after Charles got hurt. It's clear West is the guy going forward, and adding a young starting back midway through the season is a big gain.

Washington TE Jordan Reed
A concussion led to Washington tight end Jordan Reed missing the previous two games after a solid start to the year. Reed was averaging six catches  for 69 yards per game coming into this week, and he went off against the Buccaneers.

He grabbed 11 passes for 72 yards and 2 touchdowns, including the game-winning six-yard score with 24 seconds left as Washington capped off a 24-point comeback win. Reed is clearly a go-to option in this offense as long as Kirk Cousins is the quarterback.

Drops

Texans RB Arian Foster
It goes without saying, Arian Forster has to be dropped following his injury, which is reportedly a torn Achilles. What makes this injury even sadder is Foster turns 30 next August, and trying to come back from an injury this brutal, that late in a career is very hard to do. Foster's days as a fantasy star may be over, and it's worth noting that Yahoo Sports has taken Foster off their Can't Cut List, so you won't be stuck with him for the remainder of 2015.

Saints WR Willie Snead
The Saints' offense hasn't been up to its typical high-octane level we've become accustomed to under Sean Payton and Drew Brees. Willie Snead appeared to have emerged as the go-to option for Brees this season after a two-week stretch in which he caught 12 passes for 230 yards.

He clearly was Brees' favorite target with Brandin Cooks and Marques Colston failing to step up, but those two have gotten going in recent weeks, leading Snead to catch just seven passes for 80 yards during the past two weeks. It doesn't help that Snead has only one score in seven games this season. This Saints' passing game is just too erratic to warrant keeping Snead going forward.

Colts WR Phillip Dorsett
A lot of promise for Colts rookie receiver Phillip Dorsett has ended abruptly after he fractured his ankle Sunday and is expected to miss four to six weeks, according to ESPN's Adam Schefter. Dorsett injured the ankle during the first half of the Colts' 27-21 loss to the Saints.

He caught just 10 passes for 159 yards and a touchdown this season after the Colts selected him with the 29th-overall pick in this year's NFL draft. Dorsett showed flashes of promise and appeared to be rising up the depth chart, but he's no longer worth keeping in any league going forward.

49ers TE Vernon Davis
This season has been a disaster for the 49ers, so much so that they may look to trade star tight end Vernon Davis prior to the NFL trading deadline. After being a stud tight end in fantasy football for much of his career, Davis is an afterthought now in the twilight of his career while playing in a 49ers' offense that's incapable of effectively passing the ball too often.

Through five games, Davis has 12 catches for 170 yards and no scores. He's not worth keeping any longer unless you're in a deep league where starting tight ends are hard to come by. 

Lions RB Joique Bell
The Lions continue to be a mess, especially on offense. It reached a new low during Sunday's 28-19 home loss to the Vikings as Detroit had -1 yards in the third quarter and scored only on a safety in the final 35 minutes after taking a 17-6 lead in the first quarter.

The ground game has been the biggest culprit during the Lions' struggles, and Joique Bell, though the starter, is no longer worth owning in fantasy football. Amazingly, Bell was still owned in 53-percent of CBS fantasy leagues as of Sunday. It's time that number gets closer to 0.