Those who have followed Michigan football for a long time may remember the days when players would get little stickers (or decals) on their helmets whenever they made a very good play. An exceptional player would have his helmet practically covered by the end of the season. Michigan was not the only team that did this; Ohio State had them too.
Does anyone recall when this practice was discontinued, and whether there was any kind of announcement or explanation at the time? (I am not lobbying for a return to this practice, just wondering when/why it went away.)