Q: With 1:30 left in overtime team A scores a field goal. B6 is requesting a substitution and so is A7. Is A7 allowed to enter the game as a substitute at the same time as B6 after the made field goal?
A: Yes
FIBA Rule Book: 19.2.2
A substitution opportunity begins when:
• For both teams, the ball becomes dead, the game clock is stopped and the referee has ended their communication with the scorer's table.
• For both teams, the ball becomes dead following a successful last free throw.
• For the non-scoring team, a field goal is scored when the game clock shows 2:00 minutes or less in the fourth quarter and in each overtime.
FIBA Interpretations: 18/19-4.b
(b) This is a substitution opportunity only for the non-scoring team and only when the game clock shows 2:00 or less in the fourth quarter and in each overtime. If the non-scoring team is granted a substitution, the opponents may also be granted a substitution and both teams may also be granted a time-out if they request it.