Preseason look at top 2018 NFL Draft prospects by position

Here is my way-too-early look at the top three by position for the 2018 NFL Draft:

* denotes underclassman

Quarterbacks
1. Sam Darnold* 6-4, 225 USC (Top 5 overall)
2. Josh Rosen* 6-3, 212 UCLA (Round 1)
3. Josh Allen* 6-5, 224 Wyoming (Round 1)

Running backs
1. Derrius Guice* 5-11, 214 LSU (Round 1)
2. Saquon Barkley* 5-11, 225 Penn St. (Round 1)
3. Nick Chubb 5-10, 220 Georgia (Round 1-2)

Wide receivers
1. Calvin Ridley* 6-1, 188 Alabama (Round 1)
2. Christian Kirk* 5-11, 202 Texas A&M (Round 1)
3. Equanimeous St. Brown* 6-4, 207 Notre Dame (Round 1)

Tight ends
1. Mark Andrews* 6-5, 250 Oklahoma (Round 1-2)
2. Tony Fumagalli* 6-6 250 Wisconsin (Round 2)
3. Cam Serigne 6-3, 250 Wake Forest (round 2-3)

Offensive tackle
1. Mike McGlinchey 6-7, 312 Notre Dame (Top 20 pick)
2. Martez Ivey* OT/OG 6-5, 307 Florida (Round 1-2)
3. Martinas Rankin 6-5, 310 Mississippi St. (Round 1-2)

Offensive guards
1. Quenton Nelson 6-5, 325 Notre Dame (Round 1)
2. Billy Price 6-4, 317 Ohio St. (Round 2)
3. Scott Quessenberry* G/C 6-4, 315 UCLA (Round 2-3)

Centers
1. Mason Cole 6-5, 307 Michigan (Round 2)
2. Will Clapp* 6-5, 310 LSU (round 2-3)
3. Alec Eberle* 6-4, 300 Florida St. (Round 3-4)

Defensive end
1. Arden Key* 6-6, 240 LSU (Top 10)
2. Bradley Chubb 6-4, 275 North Carolina St. (Round 1)
3. Andrew Brown 6-4, 285 Virginia (Round 1-2)

Defensive tackle
1. Da’Ron Payne 6-2, 320 Alabama (Round 1)
2. Christian Williams* 6-4, 312 Clemson (Round 1-2)
3. Trenton Thompson* 6-4, 298 Georgia (Round 1-2)

Linebacker
1. Dorance Armstrong Jr. * OLB 6-4, 240 Kansas (Round 1)
2. Harold Landry OLB 6-3, 250 Boston College (Round 1-2)
3. Malik Jefferson* ILB 6-3, 240 Texas (Round 1-2)

Safety
1. Minkah Fitzpatrick * 6-1, 205 Alabama (Round 1-2)
2. Rinnie Harrison* 6-3, 216 Alabama (Round 1-2)
3. Derwin James* 6-3, 210 Florida St. (Round 1-2)

Cornerback
1. Kevin Toliver II* 6-2, 195 LSU (Round 1-2)
2. Iman Marshall* 6-1, 202 USC (Round 1-2)
3. Adonis Alexander* 6-3, 195 Virginia Tech (Round 1-2)