I picked a team which builds you up but in the end offers disappointment.
Minnesota Vikings for me, I watched a game a few years back in the playoffs and they had a 29 yard field goal in the dying seconds to win and missed, that moment I knew it was them for me.
The season just gone, win the first five games in a row and was the last team to go undefeated. They then proceeded to crumble and lose games they should have won in the final few minutes.
Never even made the playoffs, proper Everton style crumble.