Hearts head coach Ian Cathro believes his side’s defeat to part-time Peterhead was down to his new players not gelling quickly enough.
Around 600 Jambos made the long trek north to cheer on their side, however, to no joy as they were humiliated by the League Two outfit.
The 31-year-old will now come under more pressure to deliver positive results.
Next up is a home tie against free-scoring Championship side Dunfermline who top the group on eight points with Hearts and Peterhead on six.
On the game at Balmoor, which was the first competitive game between the Blue Toon and Hearts, Cathro said: “We respect we have a number of new players in the team and there are relationships which are building and growing.
“We need to make sure we are ready for Saturday first and foremost.
“It’s a disappointment as we wanted to win to put ourselves in the position at the top of the group and we haven’t done that.
“We need to go and win on Saturday and that’s the reality of the situation.
“We are disappointed and our expectations are to do better.
“Looking at the game we didn’t start particularly well. It allowed Peterhead to be motivated and to keep fighting and to push.”