Waiver Wire Workout: Week 13

Because league formats vary, one size doesn't fit all when it comes to your waiver wire. That's why I break possible free agent adds into three categories. Follow me on Twitter for the latest on possible additions to your fantasy roster.

Addable In All Leagues

David Johnson, RB, ARI (owned in 26% of Yahoo leagues). Johnson is the obvious gem of the week. Chris Johnson suffered a broken leg in Week 12 and Andre Ellington suffered a case of turf toe. CJ2K is certainly out for the foreseeable future, and we won't know about Ellington for a while, but it's been pretty obvious in 2015 that Bruce Arians doesn't view Ellington as feature-back material. That means the rookie David Johnson looks primed to get his chance as a starter in Week 13 against the Rams. If Ellington is inactive, Johnson will be a top-15 fantasy running back.

Scott Chandler, TE, NE (9% owned). Rob Gronkowski reportedly avoided serious damage to his knee on a nasty-looking injury Sunday night, but he'll miss multiple games. Chandler isn't a one-to-one comp for Gronk—because nobody is!—but he should see a whole bunch of targets beginning Week 13 against a bad Philly pass defense. If you lost Gronk, Chandler has to be your first call; if you can't get Chandler, well, I've made sure this week's Workout is TE-centric, to give you other choices.

Shaun Draughn, RB, SF (28% owned). For as long as Carlos Hyde is out with an injured foot, Draughn appears to be the Niners' every-down back. On Sunday, that was literal: Draughn played on all 55 of San Francisco's offensive snaps. He's got size and a little bit of cutting snap to him, though Draughn isn't particularly physical and runs for, let's face it, kind of a crummy squad. But guys with that kind of workload (20 touches against the Cardinals on Sunday) aren't often available at this time of year.

Bears Defense (4% owned). The 49ers are actually playing decently on offense with Blaine Gabbert under center. You could argue that they deserved to beat Arizona in Week 12. But with Gabbert, I'll still place my money on turnovers and sacks, and the Bears held up well Thanksgiving night on the road against the Packers. Home to San Francisco, they should at least limit the Niners' yards and scoreboard points.

Players listed in previous weeks who are still addable in all leagues: Alfred Morris, RB, WAS (48%); James White, RB, NE (33%); Duke Johnson, RB, CLE (46%); Theo Riddick, RB, DET (24%).

Speculative Adds

DeVante Parker, WR, MIA (4% owned). Rishard Matthews took a huge hit from Calvin Pryor on the Dolphins' first drive Sunday and suffered broken ribs, meaning he's probably out for the year. Parker is Miami's first-round pick from this spring who fell behind in training camp because of a surgically repaired ankle, but he's played a bit more over the past few games and figures to get a big crack at the Dolphins' top outside job beginning next week against the Ravens. He's raw, but he's a great athlete with red-zone size.

Jacob Tamme, TE, ATL (22% owned). If Leonard Hankerson misses more time with his hamstring injury, Tamme will remain high on Matt Ryan's receiver list. First comes Julio Jones, obviously, and Roddy White and rookie Justin Hardy are also in the picture, but Tamme has exceeded 60 yards receiving in three of his past four games, which just happen to coincide with Hank Time's absence.

Robert Turbin, RB, DAL (7% owned). With Tony Romo done for the season, Matt Cassel will lead the Cowboys, meaning they'd better have a good run game. Darren McFadden was awful Thursday against the Panthers but figures to be the lead player in this offense. Turbin is his direct backup, so if you've got DMC, you should really handcuff Turbin.

Fred Jackson, RB, SEA (3% owned). The same handcuff logic serves for Thomas Rawls. Rawls is a pure fantasy starter, and only well-traveled Bryce Brown is on the depth chart behind Jackson.

Players listed in previous weeks who are still speculative adds: Jay Cutler, QB, CHI (43%); Jameis Winston, QB, TB (43%); Brock Osweiler, QB, Broncos (18%); Charles Sims, RB, TB (30%); Jay Ajayi, RB, Dolphins (17%); Joique Bell, RB, DET (27%); Brandon Bolden, RBs, NE (6%); Jordan Todman, RB, PIT (1%); Dontrelle Inman, WR, SD (10%); Rueben Randle, WR, NYG (37%); Cecil Shorts, WR, HOU (11%); Dorial Green-Beckham, WR, TEN (16%); Nate Washington, WR, HOU (27%); Marquess Wilson, WR, CHI (9%); Tyler Lockett, WR, Seahawks (19%); Crockett Gillmore, TE, BAL (33%); Heath Miller, TE, PIT (30%); Zach Miller, TE, Bears (20%).

Deep-League Adds

Luke Willson, WR, SEA (1% owned). Jimmy Graham is done for the year with a torn patellar tendon, so the search for viable tight ends will go beyond a replacement for Gronk. Unfortunately, Willson probably won't be a consistent enough weapon in Seattle's varied and limited pass offense to be a fantasy starter week to week. But deep-leaguers could stash him to find out for sure.

Vance McDonald, TE, SF (1% owned). Garrett Celek suffered a high-ankle sprain Sunday against the Cardinals and will miss most of the rest of the year. McDonald was a favorite in the draftnik community a couple years back, though he's been awfully quiet with the Niners. Blake Bell (0% owned) could get in the way of consistent fantasy production from McDonald. But again, you may be desperate.

Jesse James, TE, PIT (0% owned). Heath Miller, whom I listed above in the "speculative" portion of the column, left Sunday's game with a rib injury and didn't return, and the rookie James played a bunch in his stead. I don't hold out a ton of hope in his case, though, even if Miller misses more time.

Dan Herron, RB, IND (0% owned). Ahmad Bradshaw is out for the year with a wrist injury, so Frank Gore's handcuff title now falls to Boom, who's danced around the league a bit already this year. Would he be great if Gore falters? Maybe not. But have you watched Gore play lately? He may be pretty darned close to faltering!

Players listed in previous weeks who are still addable in deep leagues: Chris Thompson, RB, WAS (6%); Jonathan Grimes, RB, HOU (3%); Tim Hightower, RB, Saints (0%); Jamison Crowder, WR, WAS (15%); Keshawn Martin, WR, Patriots (9%); Dwayne Harris, WR, NYG (24%); Cody Latimer, WR, Broncos (2%); Jeff Janis, WR, Packers (0%).

Christopher Harris (@HarrisFootball) is a six-time Fantasy Sports Writing Association award winner. He hosts the Harris Football Podcast every weekday. Find it on iTunes, Stitcher, TuneIn and most other podcast apps, as well as at www.HarrisFootball.com.