The 2 team, and the 24 team.
2 for bad fuel strategy. They had a shot for winning three of the first five, and making chase matters more difficult for Hamlin and Johnson. Hindsight is 20/20 but I think Nascar throw less late rate debris cautions during the chase (to their credit their letting them race), you have to plan accordingly, somewhere around the 2/3rds mark, the cheap regular season cautions go away. They should have topped off like the the 11 and 48, they lost a top three at least, maybe the win.
24 bad adjustments and a pit road speeding penalty. They have been fast during the chase, but due to Chicago last night's so so performance was devastating blow to their title hopes.