A new penalty shootout format is in place across EFL's various cup competitions this season, including the Carabao Cup.
Dubbed the ABBA format, it was used for the first time at the Under-17 European Championships, Under-20s World Cup and Women's World Cup this summer, and more recently in the Community Shield between Arsenal and Chelsea.
Should Tuesday night's tie with Bournemouth be level after 90 minutes, there will be 30 minutes of extra-time; if the tie still remains level, it will be decided by a shoot out, which still sees both teams take up to five kicks each, before moving to sudden death.
UEFA and FIFA are trialling the new ABBA system, as what might be considered a fairer alternative to the current ABAB method. The trial format sees penalty kicks follow a similar pattern to the serve in a tennis tie-break format.
Football's rule-making body IFAB found that teams taking first under the old format, were at an advantage, with 60 per cent of those teams winning - and UEFA have said, "The hypothesis is that the player taking the second kick in the pair is under greater mental pressure."