I guess they couldn't have two White receivers go sub 4.5 at the same combine. That would go against what every dwf thinks. They also don't like to have any White guys 6 foot or taller running sub 4.5 has well. Danny Coale has timed in the 4.3 time range hand timed. Tyler Shoemaker would have clocked in at 4.4.
Luck's time got moved from 4.59 to 4.67. Couldn't have the "perfect pocket passer" running the same time as Cam Newton. These official times seem to stick for White players but when they reference the 40 times from previous combines, they list the unofficial times, nfl.com had a link of the past few drafts and all of the top times were the unofficial ones.
it would be interesting to see the results of the new times they are doing, the ones with the electronic start and finish, but apparently this year they aren't releasing those to teams or fans....
Yes they do some form of drug testing at the combine, about a dozen guys test positive for weed every year but it gets overlooked. Now testing for peds I am not sure, it would be really expensive to test EVERY single person at the combine (much cheaper to do 5, 6 or 10 panel drug screen for recreational drugs) and there are ways to get around testing positive, there are some steroids that get out of your system in a few weeks.