Luke Armstrong struck the winning goal as Middlesbrough earned a 2-1 comeback win over Derby County to keep their chances of reaching the Round of 16 alive.
With the match level at 1-1, the 21-year-old striker fired in from close range at Heritage Park on 83 minutes.
Just four minutes before, Boro equalised thanks to a Hayden Coulson header from a Liam Hegarty cross. Lewis Walker had put Derby ahead on 13 minutes.
Derby will finish as Group A winners despite defeat, but the result means Middlesbrough are three points behind second-placed Birmingham City.
Middlesbrough face Nottingham Forest in the only remaining match of the group.
Both teams are level on six points, with a better goal difference than Birmingham. Victory for either would send them above the Blues into the knockout stages. A draw would send Birmingham through.
See: Boro report | Derby report
Next fixtures
Boro: 26 Feb v Forest (H) PL Cup
Derby: 2 Mar v Spurs (A) PL2