ASK THE EXPERTS appears weekly from training camp to Super Bowl with answers to a new question being posted Thursday morning. How the guest experts responded when we asked them: Which lightly regarded, late-drafted, or bottom of the roster nobody has impressed you most this preseason?

BOB HENRY

Kenbrell Thompkins has continually impressed his Patriot teammates and coaches throughout the offseason since signing on as an UDFA. He has run with the first-team offense and Tom Brady throughout training camp. The opportunity is there for Thompkins to deliver WR3 fantasy value, but first he'll have to beat out fellow rookie Aaron Dobson for a starting job. If that happens, the sky is the limit with Brady at the helm.

Henry is a senior writer/analyst for Footballguys.com since 2004 and an industry veteran of 17+ years. His responsibilities at Footballguys include leading the annual training camp reports, providing detailed preseason and year-forward projections during the season that help drive the Footballguys suite of mobile, web and desktop draft and in-season management tools, along with managing the depth charts and his popular weekly Sleepers column during the season.

PRETZEL MAY

Kenny Stills seems like a player that matches this description. The Saints' high-powered offense produces multiple stars at the receiver position. Watching the preseason he seems to have developed a good chemistry with Drew Brees already and if Brees has trust in him then his number of targets should be large, especially with the Defense already stretched trying to cover all the other weapons in New Orleans.

The May brothers have more than 20 years of combined fantasy football experience and are the co-founders of FantasyDraftMaster.com. In FDM's first 3 years as part of the Fantasy Index Experts Poll, they have amassed 1st- and 2nd-place finishes. The cornerstone of FantasyDraftMaster.com is the UberRank which is a revolutionary approach to the traditional fantasy football cheat sheet. FantasyDraftMaster.com also offers insightful and humorous commentary and recommendations on waiver wire pickups, lineup submissions and weekly pick em' pools. For more info on FDM, visit the web site or email info@fantasydraftmaster.com.

ERIC CATURIA

Scouring preseason box scores will leave one's head spinning, as known entities mingle about with the anonymous. A select few of the latter seemingly emerge from nowhere on a yearly basis during preseason action, despite rumors here and there in the months leading into training camp that relay what seem to be illusions of potential grandeur (see: Alfred Morris, 2012). Flash to the Patriots' Foxboro facility, and a gleaming gem is discovered among a decidedly unsettled wide receiver corps: undrafted free-agent rookie Kenbrell Thompkins. After hauling in four of Tom Brady's seven completions in New England's initial exhibition contest, Thompkins took the field for 21-of-25 offensive snaps with the All-Pro signal caller for Game 2 last Friday, effectively acting as the No. 2 wideout opposite Danny Amendola. While the injury-prone Amendola is easing into Wes Welker's reliable shoes quite nicely, Thompkins himself may be able to usurp a starting job from underneath 2013 second-round pick Aaron Dobson with further spectacular play in drills and the final two preseason tilts.

Caturia is a writer/editor of NFL, MLB, and NBA content for RotoWire. He can be found on Twitter @etcat30.

TIM HEANEY

Jonas Gray could sneak into the No. 2 conversation for changeup carries this year for the Miami Dolphins if and when all the Daniel Thomas buzz wanes. At 5-foot-9, 230 pounds, Gray has the build for goal-line work. His lack of shiftiness will restrict his upside but, if he can become more decisive, make him a seamless fit for tandem duties.

Since 1996, KFFL.com has been combining its award-winning news service with fantasy analysis. KFFL.com offers services including daily news, draft guides and in-season advice. Completely free, KFFL.com is your destination for fantasy baseball, football and NASCAR cheat sheets, tips, sleepers and much more. KFFL.com has won more than a dozen expert championships and was listed as "One of the 10 essential sports-related online destinations for fans, athletes and fantasy owners" by Time.com. KFFL.com is property of USA TODAY Sports Media Group.

IAN ALLAN

We must give credit to the Raiders. They have been better than anyone else at uncovering viable wide receivers. They did it with Jacoby Ford and Denarius Moore, who were later-round picks. And they did it with Rod Streater, who wasn’t even drafted. Looks like they’ve done it again with Brice Butler. He had a couple of great catches against the Cowboys, including a touchdown. Then they moved him up and let him work with the first team at New Orleans, and he did it again. He had one really impressive catch where he didn’t quite get his feet inbounds. His physical tools are very good. I think he’ll start the season as the third receiver, and he might move into the starting lineup at some point this year. I will be surprised if he’s not an opening day starter for them in 2014. Nice player.

Allan is the senior writer for Fantasy Football Index. He's been in that role since 1987, generating most of the player rankings and analysis for that publication. His work can be seen in Fantasy Football Index magazine, and also at www.fantasyindex.com.

SAM HENDRICKS

Nick Toon. He and Kenny Stills are both fighting for the WR3 spot in New Orleans behind Marques Colston and Lance Moore. Toon looks as if he has an extra year of experience over the rookie Stills but in fact his first year in the NFL was on the IR list. Still he should have learned more about the speed of the game and the routes expected of him this year. Both Colston and Moore have a history of missing games during the past few seasons so Toon could easily see some significant playing time and anyone who has Drew Brees throwing to him is worth a look. Make him your late round sleeper.

Hendricks is the author of Fantasy Football Guidebook, Fantasy Football Tips and Fantasy Football Basics, all available at ExtraPointPress.com, at all major bookstores, and at Amazon and BN.com. He is a 20-plus year fantasy football veteran who regularly participates in the National Fantasy Football Championship (NFFC) and finished 7th and 16th overall (out of 228 competitors) in the 2008 and 2009 Fantasy Football Players Championship (FFPC). Follow him at his web site, www.ffguidebook.com.

MIKE CLAY

Raiders WR Brice Butler is my favorite deep sleeper of 2013. A seventh-round pick in April's draft, Butler is 6'3" and runs a 4.37. The knock on him entering the draft was a poor college resume that included only 65 receptions during four seasons at San Diego State. Still, he impressed in camp, led Oakland in receiving in each of its first two preseason games, and is already working out of the slot in three-wide sets. Oakland's offense figures to struggle in 2013, but the team is weak at the wide receiver position, giving Butler an opportunity to play major snaps as a rookie. Keep a close eye on him in deep leagues and be sure to stash him in dynasty formats.

Clay is the Managing Editor and Director at Pro Football Focus Fantasy. It's there that he created a batch of advanced statistics, most notably average depth of target (aDOT). Mike also works as an NFL writer at Rotoworld.com and has contributed at PhiladelphiaEagles.com and for Athlon Sports.

ALAN SATTERLEE

As a lower-ranked player, QB Brandon Weeden to me was someone who really has stood out in pre-season. Through two pre-season games, Weeden has completed 18 of 25 with 3 TDs and 0 TDs, a 139.8 QB rating. As a super deep sleeper, WR Jermaine Kearse (Seattle) looked pretty dynamic the other night. He had a 12-yard reception and a tremendous kickoff return, both in the 1st quarter.

Alan Satterlee is Co-Owner and Chief Editor/COO of FantasyFootballWarehouse.com. FFW features comprehensive profiles for all the major 2013 skill-position rookies, its Trading Spaces series, the team Deep Dives, the Speed Bump competition plus draft strategies, rankings, projections and more. FFW runs in tandem with its dynasty site DynastyFootballWarehouse.com.

SCOTT SACHS

In the land of the Dawg Pound, I was going to mention Dion Lewis of the Browns, but the Cleveland Curse struck him down. Not sure of Brandon Jackson or Chris Ogbonnaya as T-Rich's back-up, but they're in the "next man up" category for now. Looking around the league, I like WR Jermaine Kearse in Seattle, Julius Thomas in Denver, and the Pats' tandem of Gronkish clone Zach Sudfeld & RB LeGarrette Blount. However, my choice for the best "no-name-but-with-great-nickname" has to be Kickalicious himself, Havard Rugland! The Lions would be nuts to keep way-over-the-hill Akers over this guy.

Scott Sachs runs Perfect Season Fantasy Football, offering LIVE Talk/Text/Email consulting & advice. Winner of Fantasy Football Index's 2012 Experts Poll & 2011 Mock Auction League, Scott can be found at http://perfectseasonffb.com/.

JAKE CIELY

Julius Thomas has impressed me with his opportunity in Denver. Thomas wasn't even on fantasy radars a few months back, and team reports had him contending with Virgil Green for third on the TE depth chart. However, due to Joel Dreessen and Jacob Tamme missing time with injuries, Thomas is seizing his opportunity. Any offense with Peyton Manning at the helm has plenty of upside in the passing game, and Thomas has eight catches for 105 yards in two preseason games (leading the team). Thomas is heading into his third season, but there is a real chance that it could put him on the map and even have him start-worthy in fantasy leagues. That is a huge leap from practice squad territory and one career regular season catch.

Ciely oversees the fantasy football staff for Football.com and assists with social media, including Twitter and Facebook. He is an award-nominated fantasy writer with over 15 years of experience. He started his fantasy sports career with his own blog and eventually became the Managing Editor at RotoExperts.com. He’s also a poker enthusiast, which is why you see many poker references, including his nickname “All In Kid.” Jake has also introduced new metrics to fantasy football analysis.

MIKE NAZAREK

Undrafted rookie TE Zach Sudfeld in New England should start if Rob Gronkowski can't play come Week 1. He's developed good chemistry with Tom Brady, and the team sees him filling at least a portion of the role vacated by Aaron Hernandez, so even when Gronk is healthy, Sudfeld should see action on the field. A very nice late-round fantasy pick.

Nazarek is the CEO of Fantasy Football Mastermind Inc. His company offers a preseason draft guide, customizable cheat sheets, a multi-use fantasy drafting program including auction values, weekly in-season fantasy newsletters, injury reports and free NFL news (updated daily) at its web site. He has been playing fantasy football since 1988 and is a four-peat champion of the SI.com Experts Fantasy League, a nationally published writer in several fantasy magazines and a former columnist for SI.com. For more info go to www.ffmastermind.com. Nazarek can be reached via email at miken@ffmastermind.com.

ANDY RICHARDSON

Kenny Stills really jumped out at me in New Orleans' second exhibition game. He looked like he knew what he was doing right away, and in the Saints' fast-paced passing offense, that's impressive. I expect he'll be starting for them as soon as next season; maybe even this year.

Richardson has been a columnist and contributor to the Fantasy Football Index magazine and web site for 12 years. His responsibilities include team defense and IDP projections and various site features, and he has run the magazine's annual draft and auction leagues since their inception. He previews all the NFL games on Saturdays and writes a wrap-up column on Mondays during the NFL season.