I don't know how a media circus could make you run a 4.9 40 and bench 223 only 17 times.
Nerves, distraction, possibly even illness or exhaustion. I only throw it out there as a possibility, not that it’s particularly likely.
That said, a “star” level player should be able to handle such things (minus illness, perhaps) and not let it affect their “game”. I mean, if scrutiny and pressure are going to depress your abilities, that does’t bode well for big-game performance, now, does it?
All of those hot jocks running around could make it difficult to run fast with a stiffy..