The Oakland Raiders have had a busy day making roster moves today. They have officially designated RB Trent Richardson and WR Rod Streater to the Non-Football Injury (NFI) list and DT Stacy McGee and KR/WR Trindon Holliday to the Physically Unable to Perform (PUP) list.
None of these four players will count toward the active roster limit until they are removed from their respective lists. The NFI list and the PUP list both act the same way when it comes to the regular season; if the players are still on their lists when the season starts they will be inactive for the first 6 weeks of the season. After Week 6, the Raiders would have 3 weeks to either activate them or shut them down for the season.
The difference between the two lists however, is one gets paid and the other one does not, or only gets paid an agreed on amount anyway. The NFI list does not get paid and is for players that are recovering from injuries that were not team related, where the PUP list is for players recovering from football related injuries that have not taken part in any of the training camp practices. Once a player has practiced with the team they are no longer eligible for the PUP list.
The Raiders have not specified why Trent Richardson and Rod Streater were put on the NFI list as of yet. Any of the four players can be activated again at any time before the season starts if they have recovered from their injuries. It is specifically not a good start to the Trent Richardson era in Oakland, as pointed out by NFL.com.