After racing to a 21-3 lead in the second quarter, the Jets were outscored 28-3 for the remainder of the game.  A game-tying 37-yard touchdown throw by Geno Smith to Jeremy Kerley with five minutes to go in the fourth quarter was wiped out when assistant coach Marty Mornhinweg called the Jets' final timeout just as the ball was snapped; even more egregiously Mornhinweg was not authorized to call timeouts, the responsibility of head coach Rex Ryan.  The Jets failed to convert after this and fell 31-24; it marked only the second time for Packers quarterback Aaron Rodgers that he won a game despite a deficit exceeding eight points.
Question: How many points was the Jets largest lead?
Answer: 18