"Amid Twitter reports from the NFL Network's Jason LaCanfora and ESPN's Adam Schefter the Raiders were looking at place kickers, Sebastian Janikowski was moving very slowly and operating the JUGS machine during kickoff drills.

No names have surfaced as potential replacement's for Sunday's game against Kansas City.

Obviously, Janikoiwski would be a huge loss. He is in the best stretch of his career, having converted 12 or 13 field goal attempts with the lone miss coming from 56 yards out. He's hit five kicks from 50 or more, including tying the NFL record from 63 yards out in Week 1 against Denver.

Coach Hue Jackson was non-specific about Janikowski's injury Thursday, saying only, "it kind of flared up."

Exactly when it flared up is open to question, but it's conceivable it happened against Cleveland. Janikowski wasn't listed as being injured on Wednesday, however.

Janikowski nailed a 48-yard field goal against the Browns, but didn't have the usual distance on his kickoffs. He had only one touchback in five kicks and hit some low line drives.

On a potential 53-yard field goal attempt, the Raiders instead ran a fake, with Shane Lechler throwing 35 yards to Kevin Boss -- a decision made easier if your kicker is hurting."