ROSTER
ADD – player is added to the roster
ADD FROM – player is added to roster from another active category (injured, reserve, disabled etc.)
DEL – player is deleted and his contract is terminated
TFR – player is transferred to another roster category
EXT – player is extended on his current roster status
PRACTICE ROSTER
ADD – played is added to the PR
REM SGD – player is “removed signed” from the PR and is added to the 46-man roster
REM UNS – player is “removed unsigned” from the PR and becomes a free agent