The 6th Hunger Games were won by District 6's Tressa Spectral at age 17.
6th Games
During the Games, she showed great skill in training. This made her ally with the careers. At the start of the Games together with her alliance killed 14 tributes, and after a week all it was reduced to 7 tributes, an she tricked her companions into guiding into a trap elaborated by her. When all died, the tide of the night flooded the cave of the last tribute, drowning him and giving Tressa the victory. Also, her odds of winning were 18-1.