Blog Post: July 25, 2026

The Lead should be positioned with approximately four feet of depth off the end line whenever space permits. That positioning widens the field of vision, improves the ability to observe secondary defenders, and creates better spacing.

In another change, the manuals give Lead officials greater flexibility when position-adjusting along the endline on drives to the basket. Rather than automatically stepping toward the sideline, officials are now encouraged to move in whatever direction provides the best open-look between offensive and defensive players. The philosophy is simple: move to improve your angle.

A new addition this season outlines pass/crash coverage on plays in transition. The new guidelines clearly define primary and secondary responsibilities for every member of the crew in both Crew of Two (Co2) and Crew of Three (Co3). The new Trail remains with the passer through the release of the ball and any ensuing contact, while the new Lead (and Center in Co3) anticipates the receiver and coverage of the potential fast break. This new section should help reduce the possibility that multiple whistles and improve transition coverage.

Perhaps the most significant addition to the IAABO Manuals addresses new procedures for clock awareness based on rules changes approved by the NFHS for the 2025-26 season.

A new procedure establishes a formal “silent count” procedure to help officials have definite information to correct timing mistakes if the clock is not started properly. Now, the official responsible for starting the clock will immediately begin a silent count following the legal touch on a jump ball, free throw or throw-in. While the entire crew can verify that the clock started properly, the official responsible for starting the clock will have primary responsibility. If the clock fails to start, the crew now possesses definite knowledge to make a correction.

In addition, end-of-quarter timing issues have also been addressed due to an NFHS rules change. A quarter or overtime period may be ruled to have ended based on definite knowledge (visible or silent count), even if the horn has not sounded.

If the clock does not start properly when a ball was legally touched inbounds, officials now have the authority to sound the whistle and rule that the quarter or extra period has ended, if they have definite knowledge that the time in the period should have expired.

PLAY 5-12-5: [NEW] Team B leads 50–49 with one second remaining in the fourth quarter. Team A has a frontcourt end‑line throw‑in. A‑1 releases the ball on a throw‑in pass, which is legally touched by B‑1. The ball is then caught by A‑2, who releases a successful two‑point try before the horn sounds. The timer fails to start the clock on B‑1’s touch but does start it when A‑2 gains control. Two seconds elapse between B‑1’s touch and A‑2’s release. RULING: No goal. In situations where a last‑second try is possible, the administering official must use a silent count. If it is evident the game clock did not start properly, officials must use this knowledge to render an accurate ruling. Comment: The silent count mirrors the procedure used for the three‑second rule and provides officials with reliable timing information on last‑second tries or taps. It may also be used to correct timing when the clock is not properly started.

Lastly, in addition to those changes, beginning this season, if the clock fails to start in the last 59.9 seconds of any quarter or overtime period, officials must remove a minimum of three‐tenths (0.3) of a second to account for a legal touch.

Examples are as follows:

1. The ball is immediately deflected out of bounds on a throw-in pass or on a rebound following a free throw, OR
2. A player rebounds an unsuccessful free throw and immediately requests a time-out, and the clock did not start.

In either of these two instances, if the officials observe that the clock has not moved after the legal touching, they will ask for three-tenths of second (0:00.3) to be taken off the clock in facilities that have a clock displaying tenths of a second.

For the first time, the manual includes comprehensive fighting-prevention procedures developed with input from IAABO legal counsel Alan Goldberger. The emphasis is on preventing situations from escalating through strong officiating, effective communication, recognition of warning signs, and immediate intervention when necessary.

The new Fighting Prevention section emphasizes preventing conflict before it escalates.

Officials are reminded to call the first foul, penalize taunting immediately, observe opponents during dead-ball periods, stay alert during loose-ball situations, recognize escalating aggression, and use strong verbal commands to de-escalate tension.

When issues do arise, officials are encouraged to move rapidly to provide space between opponents. At the Fall Seminar in Edison, New Jersey this September, Alan will be outlining these new procedures and educating officials on how to handle fighting situations.

After many years of promoting the use of the bounce pass by the Lead, the IAABO Manuals now state that the Lead should hand the ball to the thrower on frontcourt end-line throw-ins for both Co2 and Co3. This language directly correlates to what is stated in the NFHS manual. Previous language in the IAABO Manuals indicated that the official could hand or bounce the ball.

The revised wording still allows officials the flexibility to use the bounce pass in areas that support that approach. However, the standard is that handing the ball is the preferred procedure, which also aligns with the procedure at other levels of play. This is another example of IAABO making a change to align with the NFHS standard.

Another significant revision affects line coverage responsibilities in the Co2 system.

Beginning this season, the Lead official will once again be responsible for all frontcourt sideline out-of-bounds violations from the end line all the way to the division line.

The revised procedure aligns directly with the NFHS Officials Manual, reinforcing IAABO’s continued commitment to delivering one consistent message to officials, regardless of where they receive their training.

It should be noted that Crew responsibilities for administering throw-ins along the sideline have not changed. If the defensive team causes the ball to be out of bounds, after the Lead makes the ruling, the Trail is responsible for administering the ensuing throw-in.

The Trail will move across the court to the opposite sideline to administer the throw-in.

One of the more practical additions to the IAABO Officials Manuals addresses substitution responsibilities. The new language now provides officials with a consistent philosophy that mirrors the NFHS Officials Manual. Rather than assigning substitution responsibilities to one specific position in every situation, the manual emphasizes that responsibility changes depending upon how play is resumed.

During frontcourt throw-ins, the official nearest the scorer’s table will normally handle substitutions. During transition throw-ins from the backcourt into the frontcourt, responsibility may transfer between officials depending upon table location and the crew’s rotation.

The manual also clarifies that the Trail normally administers substitutions prior to the final free throw. However, when the Trail is administering a throw-in on the tableside, the Center in a Co3 may assume substitution responsibilities since they would have the best view of the scorer’s table.

Perhaps most importantly, the revision reminds officials that substitutions are a crew responsibility. Officials should establish eye contact and communicate with one another before beckoning substitutes onto the floor to ensure every member of the crew is prepared to resume play.

These procedures create greater consistency from crew to crew while bringing IAABO mechanics into closer alignment with the NFHS Officials Manual.