TOP PRIORITY OF AN UMPIRE : Stay safe > stay safe by gittin' out of the road > stay out of the road by reading the guards.
IF THE GUARD RETREATS : probable pass, move up toward LOS, watch for grab hold.
IF THE GUARD ADVANCES : play's a' coming your way , git outa' town and watch for low blocks.
IF THE GUARD PULLS : probable sweep, guard's block is the key to success of play, stay focused on it.
IMHO,
THE UMP IS THE TRAFFIC COP OF THE , MOST OF CHEAP STUFF SEEMS TO OCCUR AT/AROUND LOS. STAY ALERT AND STSAY VOCAL .
IMHO, WORK TO BECOME A REFEREE, IT'S MUCH MORE ENJOYABLE TO SEE THE PLAYERS RUNNING AWAY FROMK YOU THEN AT YOU .