Chelsea's U23 side came from a goal down to beat Exeter 3-1 and progress to the second round of the Checkatrade Trophy on Tuesday.
Exeter frontman Reuben Reid had nodded the Grecians in front after just seven minutes, but Callum Hudson-Odoi ensured the two sides went into the break level at St James Park.
Hudson-Odoi then turned provider 22 minutes from time when he crossed for Reece James to head past James Hamon, before Josh Grant sealed the victory 15 minutes later.
The victory cements the Blues as runners-up in Southern Group D, and they will face MK Dons in the next round.
Elsewhere, Yeovil came from behind to beat Plymouth and secured top spot in the same group, with Tom James and Sam Surridge cancelling out Ryan Taylor's opener. They will face AFC Wimbledon in the second round.
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Despite finishing bottom of Southern Group C, Wycombe departed the competition in style as goals from Will De Havilland and Sido Jombati earned a 2-0 win at home to West Ham U21s.
Tottenham U21s' 2-1 defeat at Barnet ensured they finished bottom of Southern Group F with just a point. Tottenham were a goal to the good at the break after Shayon Harrison's 16th-minute tap-in, but Christian Maghoma netted an own goal early in the second half and Alex Nicholls won the tie for the Bees just before the hour mark.
Meanwhile, in the Northern second round, Doncaster's Liam Mandeville cancelled out Matthew Gillam's first-half penalty to send their tie with Rochdale to penalties. Rovers were subsequently knocked out as Tommy Rowe missed the decisive spot-kick.