The Raiders placed two players on the Non-Football Injury List, the team announced on Tuesday.
Linebacker Ben Heeney and tight end Cooper Helfet both count against the 90-man roster.
The Raiders' first team practice of training camp is scheduled for Saturdya.
Heeney was selected in the 5th round of the 2015 draft out of Kansas.
After appearing in 15 games a rookie, he saw action in just four games last season.
Over 23 games for the Seahawks in 2014 and 2015, Helfet caught 25 passes for 315 yards and two touchdowns.
He spent time on the Raiders' practice squad last season.
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