The Redskins' seventh game was an NFC duel with the Bears at Soldier Field. In the first quarter, the Redskins had problems as CB D.J. Moore returned an interception 54 yards for a touchdown. However, their offense got through after QB Donovan McNabb completed a 24-yard TD pass to WR Santana Moss. In the second quarter, they took the lead after kicker Graham Gano nailed a 46-yard field goal. The lead didn't last long after QB Jay Cutler got a 9-yard TD pass to WR Johnny Knox, but they did get the lead back in the third quarter as Cutler's pass was intercepted by DeAngelo Hall and returned 92 yards for a touchdown. Hall would have a total of 4 interceptions in this game, tying a team record.

Based on the above article, answer a question. How many yards was the shortest touchdown pass?
9