Sunderland vs Southampton?

I understand the need to give the youngsters playing time but, with a chance to get into the quarter finals of the League Cup, I'm very disappointed of the team that Southampton fielded tonight in their 2-1 loss against a Sunderland side that I felt the first-team would blow aside. Jay Rodriguez was the only Saint on the field that regularly starts in the Premier League and it was more of a third than second team selection. The main damage this mentality is doing is that it's devaluing Cup competitions. As a Saints fan, of course I'm annoyed but we aren't the only team this applies to and ask the question whether anything can be done to discourage this from happening?