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The 2013 NFL Combine is shifting into full gear today, with offensive linemen and tight ends working out while defensive linemen and linebackers weigh in. We'll cover the former a bit later on this afternoon; for now, here are the defensive line weigh-in numbers, a list featuring several popular 2013 NFL Mock Draft picks for the Buffalo Bills.
| Player | School | Height | Weight | Arm |
| Ezekiel Ansah | Brigham Young | 6-5 | 271 | 35.18 |
| T.J. Barnes | Georgia Tech | 6-6 | 369 | 34.78 |
| David Bass | Missouri Western State | 6-4 | 262 | 33.48 |
| Josh Boyd | Mississippi State | 6-3 | 310 | 32.08 |
| Armonty Bryant | East Central | 6-4 | 263 | 35.68 |
| Mike Buchanan | Illinois | 6-5 | 255 | 34.08 |
| Tank Carradine | Florida State | 6-4 | 276 | 34.68 |
| Everett Dawkins | Florida State | 6-2 | 292 | 32.68 |
| Quinton Dial | Alabama | 6-5 | 318 | 34.48 |
| Lavar Edwards | LSU | 6-4 | 277 | 35.48 |
| Sharrif Floyd | Florida | 6-3 | 297 | 31.68 |
| Kwame Geathers | Georgia | 6-5 | 342 | 35.28 |
| William Gholston | Michigan State | 6-6 | 281 | 34.08 |
| Malliciah Goodman | Clemson | 6-4 | 276 | 36.38 |
| Cory Grissom | South Florida | 6-1 | 306 | 33.28 |
| Johnathan Hankins | Ohio State | 6-3 | 320 | 33.08 |
| Jordan Hill | Penn State | 6-1 | 303 | 33.48 |
| Montori Hughes | Tenn-Martin | 6-4 | 329 | 32.58 |
| Margus Hunt | SMU | 6-8 | 277 | 33.68 |
| Brandon Jenkins | Florida State | 6-2 | 251 | 33.28 |
| John Jenkins | Georgia | 6-4 | 359 | 34.08 |
| Abry Jones | Georgia | 6-3 | 313 | 35.08 |
| Chris Jones | Bowling Green | 6-2 | 302 | 32.68 |
| Datone Jones | UCLA | 6-4 | 283 | 32.68 |
| Dion Jordan | Oregon | 6-6 | 248 | 33.78 |
| Joe Kruger | Utah | 6-6 | 269 | 34.38 |
| Corey Lemonier | Auburn | 6-3 | 255 | 34.48 |
| Kapron Lewis-Moore | Notre Dame | 6-4 | 298 | 33.58 |
| Bennie Logan | LSU | 6-2 | 309 | 34.08 |
| Star Lotulelei | Utah | 6-3 | 311 | 33.58 |
| Stansly Maponga | Texas Christian | 6-2 | 256 | 34.18 |
| Stacy Mcgee | Oklahoma | 6-3 | 308 | 34.48 |
| Barkevious Mingo | LSU | 6-4 | 241 | 33.68 |
| Sam Montgomery | LSU | 6-3 | 262 | 33.78 |
| Damontre Moore | Texas A&M | 6-5 | 250 | 34.68 |
| Alex Okafor | Texas | 6-5 | 264 | 33.78 |
| Ty Powell | Harding | 6-2 | 249 | 32.48 |
| Sheldon Richardson | Missouri | 6-3 | 294 | 34.48 |
| Kawann Short | Purdue | 6-3 | 299 | 34.68 |
| John Simon | Ohio State | 6-1 | 257 | 33.28 |
| Jared Smith | New Hampshire | 6-3 | 302 | 33.48 |
| Quanterus Smith | Western Kentucky | 6-5 | 250 | 33.28 |
| Akeem Spence | Illinois | 6-1 | 307 | 33.48 |
| Damion Square | Alabama | 6-2 | 293 | 32.18 |
| Walter Stewart | Cincinnati | 6-4 | 246 | 33.08 |
| Devin Taylor | South Carolina | 6-7 | 266 | 36.08 |
| Bjoern Werner | Florida State | 6-3 | 266 | 33.28 |
| Brandon Williams | Missouri Southern State | 6-1 | 335 | 32.58 |
| Jesse Williams | Alabama | 6-3 | 323 | 32.08 |
| Nate Williams | Ohio State | 6-3 | 241 | 30.58 |
| Nick Williams | Samford | 6-4 | 309 | 34.18 |
| Sylvester Williams | North Carolina | 6-3 | 313 | 33.48 |
| Tourek Williams | Florida Int. | 6-3 | 260 | 32.48 |
| Trevardo Williams | Connecticut | 6-3 | 241 | 32.28 |