the 40 yard dash is an overrated metric for sure. But that doesn't mean it isn't valuable. Secondly the most important metric is the
3-cone drill and the Broad jump. Secondly combine numbers started getting recorded in like 1999, which is why there is a lot of misinformation regarding 40 times for the older players like Jerry Rice. For instance, in a
Bill Walsh penned article he says himself Jerry Rice timed 4.59 in the 40. Secondly as we have gotten more technology, the testing conditions (that Walsh mentions) have become much better and more accurate (laser timing, everyone performing in the same indoor testing conditions, etc. Walsh futher says the Vertical Jump is " an excellent measurable that can be applicable to explosion and movement that is so necessary in football." Secondly in todays Combine drills, since the records are kept we have a better understanding of the importance of the drills. This is why now, the 3 cone drill is widely considered the most important drill for most positions, as you run a total of 30 yards and change directions 6 times.
In your example about Terrell Suggs, yes he only ran a 4.84 40 at the combine, but again, for EDGE rushers the 3cone drill and broad jump are more important. 40 and vert are also important, but not as important. And Suggs literally didn't perform anything but the 40 at the combine. And his pro day results are hard to fins, but anything I have found mentions he had like a 33" Vert, but do not mention his 3 Cone time or Broad jump.
Again you need to know what the drills translate to.
- 3Cone drill essentially measures a players bending ability. This is why its so important for EDGE rushers and DBs. It kinda shows how good a guys hips are. Though its not just as simple as the lower the 3 cone the better, you also have to take into account the players height and weight into consideration for this. For instance a 6'7" player running a 7.2s 3 cone has better bend than a 6'3" player running a 6.85s 3 cone...This 3 cone measurement that is so important for the defensive players is less important for RBs
- Broad jump (and Vert jump) essentially show how explosive a player is, which is incredibly important in football. The truly amazing athletes are the ones that do the best in these drills.