Chelsea face London rivals Arsenal in the second leg of their league cup semi-final showdown on Tuesday night, knowing victory at the Emirates Stadium is a must.
The Blues make the short trip across town trailing by one from the first-leg just under three weeks ago.
However, Alejandro Garnacho’s brace means Chelsea are very much alive heading into the decider and recent comeback wins over Napoli and West Ham suggest this tie is far from over.
Arsenal, meanwhile, are protecting a one goal lead in front of their own supporters and know that avoiding defeat inside 90 minutes will be enough to book a place in the Carabao Cup final.
Here, Standard Sport takes a look at how the rules work for the Carabao Cup semi-final.
No. Away goals will not count in the semi-finals of the Carabao Cup.
The English Football League (EFL) scrapped the away goals rule in the 2018-19 season, which previously only came into effect after extra-time in the semi-finals.
Is there extra-time in the Carabao Cup semi-final?
Yes. Extra-time will be used on Tuesday night should aggregate scores be level after 90 minutes.
From there 30 more minutes will be played after which the outcome may be decided by a penalty shootout if Arsenal and Chelsea still can’t be separated.
This marks a significant change from previous rounds where tie goes straight to penalties if the score is level after 90 minutes. Case in point is Arsenal’s quarter-final win over Crystal Palace when they conceded a late equaliser in normal time.
The only way we’d get extra time and possibly penalties is if Chelsea win the tie inside 90 minutes by a one-goal margin.