I had never done this and was concerned about what would happen when I presented them at the gate.
As I was standing in line, I saw dozens of other people with Stubhub "tickets" - letter sized pieces of paper with the details and the all-controlling bar code on them.
The ticket-taker scanned each ticket and everyone around me with Stubhub tickets got in without any problems.
I suggest having a copy in each front pocket, just in case you misplace the ticket(s) in one pocket.
