Raiders training camp day 3 practice wrap: Khalil Mack unstoppable

Kirby Lee-USA TODAY SportsIt's day three of Raiders training camp which means the first day in pads. That also means things start to get really interesting because the Raiders can practice blocking and pass rush drills they couldn't when they were just in jerseys. More on that in a minute.

Injury update: Brice Butler was back at practice today after missing day two with an undisclosed injury. Not practicing for the first time was rookie cornerback Dexter McDonald. Still on PUP is Trindon Holliday and Stacy McGee. Still on the NFI list are Rod Streater and Trent Richardson. As it turns out, Richardson's situation looks to be related to his weight. Clive Walford is still not practicing with an…