Koenig works as a tennis broadcaster for a host of TV channels around the world, covering most notably the ATP Masters 1000 events, the Australian Open, US Open and Wimbledon (Radio) as well as the premier online tennis channel of TennisTV.com Koenig achieved a career-high singles ranking of World No.

He had wins early on in his singles career over the likes of Tim Henman, Pat Rafter, Yevgeny Kafelnikov and Felix Mantilla.

He also represented South Africa in Davis Cup on four occasions and was captained by 1985 Wimbledon finalist, Kevin Curren.

Koenig is known for his commentary on the ATP World Tour at their Masters 1000 events matches broadcast on Tennis Channel as well as the online tennis broadcast site TennisTV, often as part of a commentating duo alongside Jason Goodall.

Koenig co-hosted and commentated on ‘The Match in Africa’ where Roger Federer and Rafa Nadal played in front of the biggest live tennis audience ever at the time.