Luke has been ND's best CB the last few years, and he's made a lot of plays this year. He's struggled at times too, but who hasn't on this D.
Tillery is a true sophomore, being asked to clog up the middle. He's played well all year, especially given his responsibilities.
Jones missed most of the last year and a half of football with lower body injuries. Injuries you can't....you know....work your lower body out with.
Add to that the fact they have played over half a season worth of snaps through 4 games.
To compare any of these guys with Redfield or say they have no heart is, quite frankly, bullshit.