I don't think that Linebackers are smaller now. I hear that every once in a while and it's sounds like bullshit. It sounds like one of those things people will say because they are faster now and have more duties.
I'll grab a random year from the middle of Sanders career (1995) and compare the average height and weight of the linebackers from Sanders' divisional opponents versus this season. Taking starters off depth charts.
Name | Height | Weight | | Name | Height | Weight |
Lonnie Marts | 74 | 246 | | Lavonte David | 73 | 233 |
Hardy Nickerson | 74 | 230 | | YaYa Diaby | 76 | 270 |
Derrick Brooks | 72 | 235 | | K.J. Britt | 72 | 235 |
| | | | Joe Tryon-Shoyinka | 77 | 259 |
AVG | 73.33333 | 237 | | AVG | 74.5 | 249.25 |
| | | | | | |
George Koonce | 73 | 245 | | Isaiah McDuffie | 73 | 227 |
Wayne Simmons | 74 | 245 | | Quay Walker | 76 | 241 |
Fred Strickland | 74 | 246 | | Eric Wilson | 73 | 230 |
AVG | 73.66667 | 245.3333 | | AVG | 74 | 232.6667 |
| | | | | | |
Vinson Smith | 74 | 243 | | Jack Sanborn | 74 | 234 |
Joe Cain | 73 | 241 | | Tremaine Edmunds | 77 | 250 |
Ron Cox | 74 | 235 | | T.T. Edwards | 73 | 242 |
AVG | 73.66667 | 239.6667 | | AVG | 74.66667 | 242 |
| | | | | | |
Broderick Thoams | 76 | 250 | | Jonathan Greenard | 75 | 259 |
Jack Del Rio | 76 | 246 | | Andrew Van Ginkel | 76 | 242 |
Ed McDaniel | 71 | 230 | | Blake Cashman | 73 | 235 |
| | | | Ivan Pace | 70 | 231 |
AVG | 74.33333 | 242 | | AVG | 73.5 | 241.75 |
Not a huge difference there, some larger some smaller. Maybe there is a league-wide trend, but I'd imagine we're talking like 0.5% lighter than they were 30 years ago. I'd say that's probably offset by significant increases in strength, speed, and conditioning.
I agree with your statements about Nickel packages though.