2. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 78 65 68 55 6389 83 42 12 32 22 LJ L R U BJ READING INELIGIBLES TO DETERMINE RUN OR PASS If Tackle fires off Line of Scrimmage (LOS) and contacts defender in or beyond neutral zone, officials should be alert for a RUNNING PLAY. If Tackle sets-up to pass protect, READ PASS. REFEREE: read opposite tackle when ball is snapped. LINESMAN & LINEJUDGE: Read tackle or first ineligible to your side. BACK JUDGE: Read tackle on strong side. UMPIRE: Read center and Guards. READS IDENTIFYING KEYS LARRY THOMAS, MISSISSIPPI HIGH SCHOOL ACTIVITIES ASSOCIATION, INC.

3. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 Keys Keys are intended to help determine MAN coverage at the initial snap. Definitions Strength of Formation: determined by number of eligible receivers outside tackle. Tight End: End man no more than 4 yards from nearest lineman. Back in Backfield: Player in backfield between the tackles at snap. Trips: Three or more receivers outside tackle.

4. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 FIVE MAN MECHANICS - BJ BACK JUDGE HAS FIRST KEY –BASED ON STRENGTH AND NUMBER OF RECEIVERS –USUALLY THE END ON THE STRONG SIDE. –TRIPS: IS RESPONSIBLE FOR TWO OUTSIDE RECEIVERS –BALANCED FORMATION - DECLARE STRENGTH TO LINE JUDGE’S SIDE

5. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 FIVE MAN MECHANICS L & LJ LINESMAN AND LINE JUDGE HAVE SECOND KEY –DO NOT KEY OFF THE SAME PLAYER AS BACK JUDGE –STRONG SIDE - KEY STRONG SIDE BACK –WEAK SIDE - KEY OFF RECEIVER(S) TO YOUR SIDE –TRIPS: INSIDE ELIGIBLE RECEIVER –BALANCED FORMATION - DECLARE STRENGTH TO LINE JUDGE’S SIDE PAGE 54

6. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 78 65 68 55 6389 83 42 12 32 22 LJ L R U BJ PRIMARY( ) & SECONDARY KEYS ( ) OR READ

7. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 78 65 68 55 63 89 83 22 12 32 82 LJ L R U BJ STRENGTH - L ; PRIMARY & SECONDARY KEYS

8. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 78 65 68 55 6389 83 22 12 32 82 LJ L R U BJ PRIMARY & SECONDARY KEYS

9. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 78 65 68 55 6389 83 22 12 32 87 LJ L R U BJ STRENGTH - LJ

10. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 78 65 68 55 63 81 83 22 12 32 87 LJ L R U BJ STRENGTH (LJ)

11. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 78 65 68 55 63 88 83 32 12 22 87 LJ L R U BJ TRIPS

12. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 78 65 68 55 63 88 83 32 12 22 87 LJ L R U BJ TRIPS

13. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 78 65 68 55 63 88 83 32 12 22 87 LJ L R U BJ BALANCED

14. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 78 65 68 55 63 88 83 32 12 8 87 LJ L R U BJ BALANCED (LJ) - QB SPRINTS TO L - BJ OBSERVE 83

15. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 78 65 68 55 6389 83 22 12 32 82 LJ L R U BJ 22 MOTION CHANGES STRENGTH

16. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 78 65 68 55 6389 83 12 32 82 LJ L R U BJ 22 MOTION - STRENGTH SWITCHES TO LJ

17. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 78 65 68 55 6389 83 22 12 32 82 LJ L R U BJ MOTION - LINESMAN REMAIN STRONG SIDE

18. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 78 65 68 55 6389 83 12 32 82 LJ L R U BJ 22 MOTION CREATES TRIPS TO LINESMAN’S SIDE

19. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 78 65 68 55 6389 83 22 12 32 82 LJ L R U BJ MOTION CREATES TRIPS TO LINESMAN

20. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 78 65 68 55 63 88 83 32 12 22 87 LJ L R U BJ 32 TRIPS TO LJ; MOTION CHANGES KEYS (LJ - STRONG SIDE)

21. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 78 65 68 55 63 88 83 12 22 87 LJ L R U BJ 32 BALANCED FORMATION - STRENGTH REMAINS TO LJ’S SIDE

22. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 78 65 68 55 63 88 83 32 12 22 87 LJ L R U BJ 32 MOTION CHANGES STRENGTH TO L’S SIDE

23. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 78 65 68 55 63 88 83 12 22 87 LJ L R U BJ 32 MOTION CAUSES TRIPS TO L’S SIDE

24. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 78 65 68 55 63 89 83 42 12 32 22 LJ L R U BJ PUNT

25. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 78 65 68 55 6389 83 42 12 32 22 LJ L R U BJ BALANCED FORMATION - LJ DECLARED STRONG

26. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 78 65 68 55 6389 83 22 12 32 82 LJ L R U BJ ZONE COVERAGE AFTER R HAS ADVANCED 5 TO 7 YDS READ DETERMINES PASS

27. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 78 65 68 55 63 89 83 22 12 32 82 LJ L R U BJ ZONE COVERAGE AFTER R HAS ADVANCED 5 TO 7 YDS READ DETERMINES PASS

28. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 78 65 68 55 63 89 83 22 12 32 82 LJ L R U BJ ZONE COVERAGE AFTER R HAS ADVANCED 5 TO 7 YDS READ DETERMINES PASS

29. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 78 65 68 55 6389 83 42 12 32 22 LJ L R U BJ Running Play: Back Judge Responsibility LARRY THOMAS, MISSISSIPPI HIGH SCHOOL ACTIVITIES ASSOCIATION, INC. Recognize Strength of Formation Key: Tight End Read Tackle Read Key Locate POA Officiate in front of POA

30. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 Keys Keys are intended to help determine MAN coverage at the initial snap. Definitions Strength of Formation: Determined by number of eligible receivers outside tackle. Tight End: End man no more than 4 yards from nearest lineman. Back in Backfield: Player in backfield between the tackles at snap. Trips: Three or more receivers outside tackle to one side. Back Judge Has first key; Based on strength and number of receivers. Usually the End on the Strong Side. Trips: Is responsible for two outside receivers. Balanced Formation: Declare strength to Line Judge’s side. Linesman and Line Judge Has second key Do not key off the same player as Back Judge. Strong Side: Key strong side back Weak Side: Key off receiver(s) to your side Trips: Inside eligible receivers Balanced Formation: Declare strength to Line Judge’s side.Page 54 R, L, LJ, BJ: Read tackle at snap (run or pass); Umpire: Read guards and center at snap

31. 4 0 4 5 5 0 4 5 4 0 4 5 5 0 4 5 4 0 78 65 68 55 6389 83 42 12 32 22 LJ L R U BJ THANK YOU FOR STUDING THIS PRESENTATION LARRY THOMAS, MISSISSIPPI HIGH SCHOOL ACTIVITIES ASSOCIATION, INC.