CHRIS HARRIS was blown away after being picked for his Lions Test debut.
The Scotland centre starts alongside Robbie Henshaw in Saturday's crunch Cape Town showdown.
Gloucester man Harris is one of three starting changes to the side that kicked off with a 22-17 win, with prop Mako Vunipola and scrum-half Conor Murray also in.
Out go Elliot Daly, Rory Sutherland and Ali Price to the bench, while Toby Faletau has replaced Hamish Watson among the subs.
But Harris is the only man making his full debut.
The 30-year-old said: "I was a bit taken aback when my name was read out by Warren. I am absolutely delighted.
"It is a big challenge for me personally and us as a team to go and get two victories.
"When a team wins you think they will go with a similar sort of team but we had training and it was hard to tell what the team would be.
"It was a surprise, a nice surprise. Pressure is a privilege, isn't it? It's an opportunity for me to go out there and show what I am about."
Speaking about South Africa, who also made three changes, Lions boss Warren Gatland said: "They are desperate to stay in the series and we've got a chance of winning the series on Saturday.
"We've spoken to the players, making sure they're mentally right because you don't want to be using your get-out-of-jail card, which is going to be the Third Test."
The Boks have brought in props Steven Kitshoff and Frans Malherbe, while Jasper Wiese replaces Kwagga Smith.
Head coach Jacques Nienaber added: "This is a massive game for us. It is do or die in order to stay in the series."