Answer based on context:

The rematch of these division rivals was a must-win game for the Giants in a season where every game was quickly becoming a must-win game for the Giants. A win would keep alive the Giants' hopes of winning the NFC East. Dallas receiver Roy Williams scored the game's first touchdown in the second quarter, on a 4-yard pass from Romo. Manning responded with a 21-yard shot to Nicks on the ensuing drive. On the Cowboys' next possession, Umenyiora picked up a Marion Barber fumble, which Jacobs later turned into a 1-yard touchdown run. In the third quarter, Romo found Williams in the end zone again, this time for 5 yards. But on the next play from scrimmage, Jacobs caught a 74-yard touchdown for the longest reception of his career. Another Giant set a personal record in the fourth quarter; Hixon's 79-yard punt return was the longest of his career, and it resulted in his second career return touchdown. In a late rally by the Cowboys, Miles Austin caught a 22-yard touchdown pass from Romo, but the ensuing onside kick resulted in a penalty on Sam Hurd for illegal touching and the Giants ran out the clock. The Giants had swept the Cowboys for the first time since 2004, and were now only one game behind in the division standings.

How many yards was the shortest touchdown run of the game?
1