Brandon Weeden started for the Texans as Brian Hoyer was still out due to a concussion. Tennessee's offense struggled throughout the game, with Antonio Andrews fumbling the ball on the Titans' first possession. Quintin Demps returned the fumble 33 yards for a touchdown. Nick Novak made the extra point to put the Texans up 7-0 early in the game. Early in the 4th quarter, down 0-34, Tennessee marched all the way down to the Houston 9 yard line, the first time the Titans made their way inside the Houston 20. On 3rd and goal Tennessee quarterback Zach Mettenberger was sacked by J. J. Watt, with Mettenberger fumbling the ball and Jared Crick recovering it four Houston. The Texans failed to capitalize on the turnover, having to punt the ball away. Tennessee got their first score of the day with 1:31 left in the game, with Mettenberger connecting with Tre McBride for a 1-yard touchdown reception. The Titans decided to go for a two-point conversion, but the attempt failed. With the Texans receiving the ball back, backup quarterback B. J. Daniels took the knee to close out the game. The Texans defeated the Titans 34-6 and improved to 8-7 on the season.

Based on the above article, answer a question. On which goal Zach Mettenberger was sacked?
On 3rd