Andrew Luck

The bulky black brace Cards QB Carson Palmer wears on his left knee is about the only sign he is less than nine months removed from his second torn anterior cruciate ligament.

That and, well, the way head coach Arizona Cardinals coach Bruce Arians still sometimes shakes his head in disbelief that three weeks into training camp, Palmer isn’t just healthy, he’s better.

And maybe better than he’s been at any point since he made back-to-back Pro Bowls in 2005 and 2006 while playing for the Cincinnati Bengals.

“Carson is in great shape, mentally and physically,” Arians told USA TODAY Sports.

Plenty of coaches gush these sorts of platitudes about their quarterback this time of year. But it means something coming from a quarterback guru like Arians, who has tutored passers like Peyton Manning, Ben Roethlisberger and Andrew Luck.

The story said that through three weeks of training camp, Palmer has been among the Cardinals’ most consistent players, something that backs up numerous reports we've had here at 4for4. In a recent fully-padded practice, he zipped pass after pass across the middle of the field to Larry Fitzgerald, and nailed several deep touchdown passes to second-year receiver John Brown — all while playing against a secondary that includes stars Patrick Peterson and Tyrann Mathieu. Then, in his first live action since suffering the knee injury on Nov. 9, Palmer went 4-for-4 for 77 yards to lead the Cardinals to a touchdown in his one series of work in the preseason opener against Kansas City last week. All signs are pointing to Palmer having very nice, later-round value at the QB position, definitely something to note if you're waiting to draft at the position.