ALAMEDA -- The rigors of six NFL games seems to be materializing on the Raiders' most recent injury report as 19 players dot it this week.In fact, three were injured during practice Wednesday -- receiver Juron Criner, defensive end Matt Shaughnessy and safety Mike Mitchell -- as Oakland began preparations in earnest for Sunday's game at Kansas City.Coach Dennis Allen said he was not sure if any of the injuries were particularly worrisome."We'll have to get in here with the trainers and see where we're at," said Allen, who also said he was not sure if Shaughnessy's shoulder issue was related to the one that ended his season last year."I didn't even ask which shoulder it was," Allen said. "I just know that he had a little shoulder irritation, and we held him out the last period or two of practice. So we'll get in and check him out, see where he's at."Kansas City, like Jacksonville last week, is coming off a bye week with defensive end Glenn Dorsey (calf), running back Peyton Hillis (ankle) and tight end Steve Maneri (ankle) practicing limited Wednesday and second-string quarterback Matt Cassel (concussion) and receiver Devon Wylie (hamstring) practicing full.Following, then, is the Raiders' injury report for Wednesday:Did not participate -- RT Khalif Barnes (groin), CB Shawntae Spencer (right foot).Limited participation in practice -- DT Desmond Bryant (right elbow), LB Keenan Clayton (shoulder), WR Juron Criner (hip), TE Richard Gordon (hamstring), PK Sebastian Janikowski (left groin), RB Taiwan Jones (knee), S Mike Mitchell (ankle), DT Richard Seymour (knee), DE Matt Shaughnessy, WR Rod Streater, DE Dave Tollefson (shoulder).Full participation in practice -- LB Miles Burris (elbowquadricep), RB Mike Goodson (hip), DT Tommy Kelly (shoulder),RB Darren McFadden (shoulder), TE Brandon Myers (knee), C Alex Parsons (back).