Middlesbrough could become the first team outside of the Premier League to reach the EFL Cup final in 11 years. Of course, if they advance past Chelsea in their League Cup semi-final return leg on Tuesday.The Championship side, playing in their first EFL Cup semi-final since 2004, hold a narrow 1-0 lead going into the second leg at Stamford Bridge.These guys! Boro grab a shocking win against the ever-unconvincing BluesHackney’s winner sent the home crowd into jubilation, and if he finds the net again at Stamford Bridge tonight, he will become only the second player to score in both legs of a League Cup semi-final tie for Michael Carrick’s side after Paul Merson in 1997-98 against Liverpool.Chelsea, on the other hand, still have 90 minutes (or more) to turn things around, which could be their only chance to clinch a trophy this season. The Blues have made it to the final on two of the last three occasions they’ve lost the first leg of an EFL Cup semi-final tie, and on both occasions, the second leg was at Stamford Bridge.##NAJAVA_MECA_7822142##Unsurprisingly, Chelsea generally do well at home against lower-league opposition in this competition. They have won 15 of their last 16 League Cup home games against sides from a lower division, with their last such defeat coming in October 1999 against Huddersfield Town (1-0).Chelsea continue to be without Christopher Nkunku, Reece James, Malo Gusto, Robert Sanchez, Wesley Fofana, Marc Cucurella, Lesley Ugochukwu and Romeo Lavia.EFL CUP – SEMIFINALTuesday 23.00: (1.25) Chelsea (6.50) Middlesbrou. (10.5)Wednesday 23.00: (4.90) Fulham (3.60) Liverpool (1.75)***odds are subject to change