Match Details.

Middlesbrough are the first lower league side to beat Chelsea across any domestic cup competition since Bradford won 4-2 at Stamford Bridge in January 2015. The Blues’ 28-game streak is over.

Chelsea in front of goal in the first half vs. Middlesbrough:

• 11 shots
• 3 shots on target
• 3 big chances created
• 3 big chances missed
• 0 goals

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Highlights.

Hayden Hackney has now scored or assisted 2 goals in the Carabao Cup so far this season.

Hayden Hackney is the first Middlesbrough player to score against Chelsea since Mark Viduka in August 2006, ending their run of 14 hours and 6 minutes (11 games) without a goal against the Blues.

Among Premier League sides, only Bournemouth and Nottingham Forest (32 each) have lost more games than Chelsea (31) in all competitions since the start of last season, while no side has lost more away from home than the Blues (21).

Chelsea’s defeat to Middlesbrough tonight is the first time they’ve lost a League Cup match against a side from a lower division since October 1999 against Huddersfield.

Until today, Middlesbrough have played 10 matches against Chelsea without scoring a goal. Hayden Hackney is the first Boro player to score against the Blues since Mark Viduka in August 2006.

Middlesbrough’s Carabao Cup record this season:

• 6 games
• 6 wins
• 0 defeats
• 15 goals scored
• 5 goals conceded
• 3 clean sheets

This is the 10th time Chelsea have reached the League Cup semi-final since the turn of the Century. Of the previous 9 times, have reached the final on 6 occasions.

Thiago Silva (39y 109) is the oldest player to start an EFL Cup semi-final match since Ryan Giggs against Sunderland 10 years and 2 days ago today (40y 39d).

Chelsea’s last two defeats in domestic cup semi-finals:

• 2019: Tottenham 1-0 Chelsea
• 2024: Middlesbrough 1-0 Chelsea

Mauricio Pochettino was involved in both.