Tracker stats are messages which are drawn on your screen informing you about 'hot' actions going on in game. To enable it you have to have fragfile.dat in your <quake>/qw/ dir and have following variables set:
cl_parsefrags 1
cl_loadfragfiles 1
r_tracker_time 4
r_tracker_streaks 1
r_tracker_messages 1
r_tracker_flags 1
r_tracker_frags 1
Those r_tracker_* values listed here are default.
After this you should be able to see messages like 'Foobar is on killing spree, 10 frags in a row!' during the game.
Last update: 31.12.1969 16:00 PST, made by JohnNy_cz