2011 was a relatively disappointing year from Jetta as he struggled to have an impact in several games. While he was able to have an influence at times throughout the year when he came on as the Swans' substitute, he often found it difficult to find the ball through 4 quarters of football. Although he suffered a disappointing 2011 season, he had an impressive lift of form in the 2012 season. The most notable improvements in his form are improved foot speed, kicking accuracy, and decision making. In 2011, Jetta only managed to kick 9 goals in the entirety of the season, yet by the end of round 16 of the 2012 season, he had kicked 36, making him first for goals in the Sydney squad and seventh in the competition itself. Jetta has improved immensely and has credited this to an outstanding pre-season.