How have the last three Detroit Lions draft classes fared? That’s a big question -- and one that is yet to be fully answerable. But we’ll give it a shot in this week’s Lions Mailbag.

To as a question for a future Mailbag, use the hashtag #LionsMailbag on Twitter, email me at michael.rothstein@espn.com or ask away on Facebook here.

@mikerothstein Am I correct in thinking Quinns draft class has contributed to this team more this year than Mayhews last 2 draft classes?

— The Arrowman (@jason_rocco) October 26, 2016

Jason,

This is something I became genuinely interested in after you asked because a lot has been made about Martin Mayhew’s struggles with the second round of the draft throughout his tenure. Other than his stellar 2013 class, Mayhew’s drafts were very scattershot.

And it hurt the depth of the Lions.

With that in mind, let’s go by the rounds to see what the Lions have gotten from their past three drafts, understanding many of these players are still works in progress.

First round:

2016, OT Taylor Decker: Decker has taken over the left tackle job from the day he was drafted and has progressed well throughout the season. There have been some issues at points, but he’s shown he’s going to be a starting level NFL tackle for a while.

2015, OG Laken Tomlinson: He was benched in Week 7 in favor of Graham Glasgow and has been consistently inconsistent throughout his first season-and-a-half in the league. It’s been a bit of an issue.

2014, TE Eric Ebron: When healthy, Ebron has been a productive player for Detroit. He’s been the team’s top tight end and has 90 career catches for 995 yards and seven touchdowns. But he’s missed at least two games every year. Mayhew, of course, passed on a number of Pro Bowlers for Ebron.

Verdict: Quinn’s pick.

Second round:

2016, DT A’Shawn Robinson: He’s been a rotational defensive tackle with potential, but hasn’t cracked the starting lineup yet. The potential is there and he’ll be a productive player in the league soon, but he’s just a part of the defensive line right now.

2015, RB Ameer Abdullah: When healthy, he’s been Detroit’s top running back and an impact player. But he’s out for the season with a foot injury and played through a shoulder injury a good portion of last season. He’s got 161 career carries for 698 yards and two touchdowns.

2014, LB Kyle Van Noy: Van Noy played multiple spots at linebacker but it didn’t work out and was traded to New England this week.

Verdict: Mayhew’s picks, because of Abdullah.

Third round:

2016, OG Graham Glasgow: He replaced Laken Tomlinson in the starting lineup and fared well so far. It’s a very, very small sample size but it looks like he’ll be one of the guards of the future in Detroit – either with Tomlinson or Larry Warford.

2015, CB Alex Carter: He was injured last year and is now on the team’s practice squad.

2014 OC Travis Swanson: Swanson has started at center for Detroit the past two seasons and has come into his own this year. He’s been one of the more reliable offensive linemen the Lions have had. After the team drafted Glasgow to possibly replace him, it looks more likely he might end up playing alongside of him for a while.

Verdict: Tie.

Fourth round:

2016, S Miles Killebrew: He’s starting to play a bit more now in specific packages for defensive coordinator Teryl Austin. He’s showing flashes of potentially being a productive player in the future.

2015, DT Gabe Wright: He was cut in the preseason by the Lions.

2014, CB Nevin Lawson, DE Larry Webster: Lawson has developed into one of Detroit’s starting cornerbacks and has shown bits and pieces of strong play. He’s an average starter in the league and is really in his second season after missing his whole rookie year due to a foot injury.

Verdict: Mayhew, although this could change in the future.

Fifth round:

2016, OL Joe Dahl, LB Antwione Williams: Dahl is a depth lineman who could end up pushing for a starting spot next season. Williams has been receiving more time lately and his ascent might have been one of the reasons the Lions traded Van Noy.

2015, FB Michael Burton: He’s been Detroit’s starting fullback the past two years and filled his role well.

2014, DT Caraun Reid: Reid was cut by the Lions in training camp and ended up in San Diego, where he was productive until a knee injury sent him to injured reserve. He was one of the Lions’ more surprising cuts this season.

Verdict: Quinn, based on projection.

Sixth round:

2016, QB Jake Rudock, DT Anthony Zettel, LS Jimmy Landes: Rudock is on the practice squad. Landes is on IR. Zettel has carved out a small role as a rotational defensive end, but has shown progress and has five tackles the last two games.

2015, CB Quandre Diggs: He’s been Detroit’s starting slot corner this year and has provided very good value for his draft position. He has 27 tackles this year but has yet to record a career interception.

2014, TJ Jones: Jones missed his rookie year with injury and was surprisingly cut this season. He’s on the team’s practice squad.

Verdict: Mayhew, but it could end up being Quinn.

Seventh round:

2016, RB Dwayne Washington: He forced his way onto the Lions based on his play and has battled injuries. When he’s been on the field he’s been dynamic with 18 carries for 76 yards and a touchdown.

2015, OL Corey Robinson: He’s carved out a role as a reserve and jumbo package lineman in the offense.

2014, K Nate Freese: He won the job in 2014 and was cut after three games.

Verdict: Quinn.