"I've been involved in Vancouver Winter Olympics and also I'm a driver for Australian Open Tennis. I've been in games in Melbourne in 2006 the Fund World Swim Championships and the Homeless World Cup Soccer."
And this year she says the games seem a little different. "It's a whole new generation that I'm volunteering with. Its lots of young girls and they seem to spend a lot of time on Facebook.
Kerber is working at the Iceburg ensuring media and athletes connect. She loves it, but volunteering comes at a price.
"I've taken 5 weeks leave without pay so it's costing me about $3,000 a week its worth it and if you are considering volunteering in 2018 take a pro's advice: do do it without hesitation."
Kerber said if she had the chance to do it again, she would.