Mark T. DeNucci, Sr. Will Love This ...

[ilyazhito]

A1 is a jumper by virtue of having participated in the initial jump ball. Because it did not legally end, he still remains a jumper. A jumper or a free thrower cannot be substituted for unless he is injured, ill, or disqualified. A6 cannot enter the game to substitute for A1, because the jump ball has not ended. If the jump ball had been legally or illegally ended, i.e. because of a jump ball violation or one jumper tipping the ball straight out of bounds, then the substitution of A6 for A1 would be legal. A2 cannot replace A1 because the jump ball must be attempted again. According to Rule 6-4-3-NOTE, "When the alternating-possession procedure has not been established, the jump ball shall be in the center restraining circle between the two players involved in the subsequent action." The subsequent action was A1 and B1 failing to touch the tossed ball, so they must, by rule, be the two players involved in the second jump ball.