ALAMEDA -- While running back Darren McFadden (foot) was again not on the field at the start of practice Friday, placekicker Sebastian Janikowski (hamstring) had a helmet on but had yet to kick before the media window closed.
There is little doubt that McFadden will sit out Sunday's sold-out home game against Denver but Janikowski is a more interesting and delicate case. Coach Hue Jackson acknowledged Thursday he would have a kicker on speed-dial in case Janikowski cannot go again. Dave Rayner was on the roster for the Raiders' 28-0 loss to Kansas City on Oct. 23. He had the opening kickoff and never stepped on the field again.
Meanwhile, free safety Michael Huff (ankle) and strong safety Tyvon Branch switched jersey at the beginning of practice.
Receiver Louis Murphy, who is also a gunner on punt team, was being stretched out on the side. He underwent sports hernia surgery during camp and has only been active the past two games.
Cornerback Chimdi Chekwa (hamstring) was on a stationary bike.
Middle linebacker Rolando McClain (ankle) was practicing for the first time since injuring the ankle at Houston on Oct. 9, though he has not missed a game.
Cornerback Chris Johnson (hamstringgroin) was also nowhere to be seen and should be headed to season-ending Injured Reserve.
Raiders Pro Bowl left guard Kelechi Osemele, running back Taiwan Jones and safety Brynden Trawick are currently enjoying their offseason in New Zealand.
But a few videos they posted going white-water rafting and bungee jumping left head coach Jack Del Rio a bit anxious.
"Anxiety level went up a bit thinking of my BIG pro bowl LG on the rapids!!" Del Rio tweeted Monday. "Can't leave out Brynden or Taiwan either ... have fun and be safe"
Osemele has posted a handful of photos and videos from the trip, including one of a raft capsizing with the caption: "It got real out there!!! Category 4 Rapids #NewZealand." Another showed the 6-foot-5, 333-pounder doing a backflip off a bungee platform with the caption: "Just did a backflip off the highest swing in the WORLD!!!!!!! Crazy!!! #LivingLife"
Trent Richardson is reportedly in some trouble.
Richardson was arrested on Thursday night for domestic violence, according to TMZ Sports.
The former running back was taken into custody on a third degree charge, the report states, with bail being set for $1,000.
The arrest was made in Hoover, Alabama.
The Browns selected Richardson with the third overall pick in the 2012 draft.
He was traded to the Colts in 2013 and played for Indianapolis in 2014.
He signed with the Raiders in 2015 and appeared in three exhibition games, but did not make the team.
The 26-year old was cut by the Ravens last August.