Under-fire Aldershot boss Dean Holdsworth slammed his side's defending after they suffered a fifth successive defeat at the hands of Plymouth.
The Shots, who were booed off by their own supporters at the weekend, got off to the worst possible start as Paris Cowan-Hall opened the scoring after just 34 seconds. Craig Reid equalised but Argentine midfielder Andres Gurrieri scored a superb 30th-minute winner to seal a 2-1 win for the Pilgrims in the Johnstone's Paint Trophy.
Holdsworth said: "We scored a fantastic goal but gave them two goals. It was catastrophic defending for the first goal in the first minute of the game."
He added: "We have had two meetings in the last two days and we spoke about doing the right things and we have given them a goal. We saw it coming and didn't deal with it. And for the second goal, again we have given them too much space to run into inside and he came off the man and scored a decent goal. But we could have done something about it.
"I am disappointed with the defenders and the defending side of the game, we are gifting players goals at the moment. We seem to get punished every time a team attacks against us. There is vulnerability there and we are having that sort of run of games where we certainly need to be tighter at the back."
Pilgrims boss Carl Fletcher, whose side are now in Saturday's draw for the southern section quarter-finals, said: "I am really pleased. We had a really young side out, a game plan, stuck to it and got the early goal.
"It was pleasing the way the lads stuck at it because Aldershot are a big physical side, with a lot of tall players in there and we didn't have too many. We only had a couple of players over six foot."