Mauger, wearing the No.10 shirt, led a young team to a 22-17 victory and could not disguise his pride in the performance of those around him.
“It’s a huge win, against the world champions, in front of a sold-out crowd and the opening of the new stand,” said Mauger.
“We had a lot of young guys playing with a lot of heart. The pride in our performances here at Welford Road came through.
“Credit to the forwards - the scrum was awesome, we had them on the ropes there, and we pinched some their lineout too – but the whole team did a fantastic job.
“We believed we could do it. Before the game we said we couldn’t be in fear of who we were are up against. As world champions, you respect them but you can’t be in awe of them. And when you are under pressure you have to keep your composure.”
Mauger stepped into the fly-half role due to the absence of Toby Flood and Sam Vesty due to injury, while Jeremy Staunton was rested after starting every game since the pre-season programme.
“I was looking forward to playing at 10 all week,” he said. “I thought it would be a good challenge and we went out there to enjoy it but also give as good account of ourselves.
“It’s a pretty special day for everyone involved and for the club as a whole.
“The crowd was awesome, there was a lot of passion from the stands and that gave the guys a real lift. The noise at the end and the support was fantastic.”
Tigers return to Welford Road for an LV= Cup tie against Newport Gwent Dragons next Saturday, kick-off at 3pm. Tickets are available now. Contact the Tigers ticket office now – phone 0844 856 1880, book online or call in at Welford Road.