Backcourt Violations (Rule 9-12.5) - This rule states that “A pass or any other loose ball in the
front court that is deflected by a defensive player, which causes the ball to go into the backcourt
may be recovered by either team even if the offense was last to touch the ball before it went into
the backcourt.” The requirement that the deflection causes the ball to go into the backcourt also
includes those plays when the offensive player gains control of the deflected ball while airborne
and lands in the backcourt or when the offensive player gains backcourt status and then touches or
controls the ball which is still in the front court. In both cases, the offensive player has technically
caused the ball to go into the backcourt, but to prohibit the offensive player from
touching/controlling the ball in these situations would prevent the offensive team from gaining
possession of a loose ball until the ball gained backcourt status by its own momentum after the
deflection. This unfairness is not within the spirit or intent of the rule. However, note that similarly
to Rule 9-12.6, after a deflection by the defense in the front court and the offense establishes player
control while the player is on the playing court, that player would commit a backcourt violation if
he then stepped into the backcourt.

https://ncaambb.arbitersports.com/Groups/104883/Library/files/Rule_Interp_Rule_9-12_022019.pdf