EXCLUSIVE | The art of Robbie Koenig’s tennis commentary

Few sports commentators have created as many memorable phrases as Robbie Koenig.

Whether he’s describing a breathtaking rally, a spectacular winner, or a player operating at an extraordinary level, Koenig has developed a broadcasting style that is energetic, colourful, and unmistakably his own.

Yet the language that has become synonymous with his commentary wasn’t something that happened by accident.

It was the result of years of deliberate work.

Learning the Importance of Language

When Koenig first transitioned from professional tennis to broadcasting, he quickly discovered that understanding the game wasn’t enough.

The real challenge was communication.

“You’re not a player anymore. You’re in the game of communication and language.”

Tennis presents a unique challenge for commentators. During a typical match, viewers might witness dozens of brilliant points, winners, and dramatic moments. Describing each one with the same handful of adjectives soon becomes repetitive.

Koenig realised this early.

“I found myself using the same adjectives all the time.”

As social media became more influential, that repetition became even more obvious. Fans would quickly notice recurring phrases or descriptions.

Rather than ignore it, Koenig embraced the challenge.

He actively worked to expand his vocabulary, refine his timing, and find new ways to describe familiar moments.

His goal became simple: say the same thing in twenty different ways.

The result is a commentary style that has become one of the most distinctive in the sport.

The Birth of a Viral Phrase

Of all the expressions associated with Koenig, none has become more famous than one particular line.

“Reflexes like a mongoose on amphetamines.”

The phrase has entered tennis folklore.

Ironically, Koenig didn’t invent it himself.

He recalls reading the description years ago in an article and immediately recognising its potential.

“I thought that’s an incredible saying.”

His commentator’s brain instantly began visualising where it might fit in a tennis match.

He imagined a lightning-fast exchange at the net. A rapid-fire volley duel. A point requiring extraordinary reflexes.

Eventually, the perfect moment arrived.

During a match involving Roger Federer, Koenig unleashed the phrase on air.

The reaction was immediate.

The line spread rapidly across the tennis world and quickly became one of the most quoted commentary calls of the era.

Even Federer heard about it.

A few weeks later, Koenig stepped into an elevator at a tournament and found himself alongside the Swiss superstar.

Federer smiled.

“Hey boet! Reflexes like a mongoose on amphetamines!”

The phrase had already reached him.

“It kind of went viral,” Koenig laughs.

When Players Are Playing “Lights Out”

The mongoose line may be his most famous, but it is far from his only favourite.

One of the expressions he particularly enjoys using occurs when a player reaches a level that seems almost superhuman.

“Flood the court and see if this guy can walk on water.”

For Koenig, phrases like these should be used sparingly.

Timing matters.

The right call delivered at the right moment can elevate a great point.

Overuse it, and the impact disappears.

That’s why many of his trademark lines are carefully reserved for genuinely special occasions.

Inspiration Beyond Tennis

Koenig’s broadcasting influences extend well beyond tennis.

Naturally, working alongside Jason Goodall for many years shaped his early development. The pair became one of the most familiar commentary combinations on the ATP Tour.

“We were like an old married couple.”

But Koenig also draws inspiration from other sports.

He admires the enthusiasm of NBA commentators, the precision of elite football broadcasters, and the communication skills of leading rugby commentators.

One broadcaster he particularly admires is Peter Drury, whose ability to combine emotion with storytelling has earned global recognition.

For Koenig, great commentary is transferable.

Whether it’s tennis, football, rugby or basketball, the principles remain the same: timing, clarity, and emotion.

Entertainment Versus Analysis

One of the biggest challenges in modern broadcasting is finding the balance between education and entertainment.

Koenig admits he generally leans toward entertainment.

Statistics matter, but only when they add genuine value.

“I’d rather be frugal with my statistics.”

The key, he believes, is selecting the right numbers at the right moments rather than overwhelming viewers with endless data.

Fans remember stories. They remember emotion. They remember moments. The best commentators help bring those moments to life.

And after nearly two decades behind the microphone, Robbie Koenig has mastered that craft as well as anyone in the game.

Coming in Part 4: Koenig’s views on tennis’s greatest players and rivalries, his surprising GOAT selections, and why he believes today’s stars are playing a completely different sport from the one he knew as a professional.

PART 1 | EXCLUSIVE | Robbie Koenig: From doubles specialist to the Voice of Tennis

PART 2 | EXCLUSIVE | Calling history: The matches and moments Robbie Koenig will never forget

Dave Marshall is reporting exclusively from the 2026 US Open in New York for The South African.