Nick Kyrgios returned a serve not even aimed at him.
Nick Kyrgios returned a serve not even aimed at him.

Kyrgios reignites fiery Twitter war

It's one of sport's greatest feuds and it has again been reignited by Aussie Nick Kyrgios.

The Aussie hothead once again took aim at New York Times tennis writer Ben Rothenberg after Rafael Nadal dismantled Greek wunderkind Stefanos Tsitsipas 6-2 6-4 6-0 to reach the Australian Open final.

A seemingly innocuous Rothenberg tweet about Nadal's path to the final drew a withering response.

Nadal has yet to drop a set in the 2019 Australian Open and Australia's Duckworth won the most games against the Spaniard despite falling 7-5 6-3 6-4.

Only Tomas Berdych has been able to even take Nadal to a tie-break, but their match was a landslide - 7-6 6-1 6-0 - after a tight first set.

While Rothenberg's stance didn't seem the most controversial call, Kyrgios fired back on Twitter, where much of this war has taken place.

Kyrgios and Rothenberg have a long history of Twitter beefs, most famously at last year's US Open.

In a long thread, Rothenberg accused Kyrgios of not standing by anything, while Krygios hit back, calling Rothenberg a "keyboard warrior".

There were also battles throughout 2017, including when Rothenberg pointed out Kyrgios was the fines leader at the French Open in 2017, before Kyrgios took exception to Rothenberg calling out Kei Nishikori for withdrawing from the Halle Open tournament for the third straight year in 2017.

But this fight has been going for years. In 2016, Rothenberg wrote a column for Fox Sports suggesting Davis Cup captain Lleyton Hewitt should bench himself in a tie against the USA.

Kyrgios unleashed.

Then the next day, Rothenberg dredged up another tweet from another Kyrgios feud, this one with Bernard Tomic.

It's a feud that doesn't appear to be anywhere near over, but Rothenberg has admitted "the cupcakes offer will never expire," according to Deadspin.

In case you were wondering, Duckworth was happy for the mention, although he probably would have preferred Tsitsipas' prizemoney of $920,000 compared to his $75,000 for his first round exit, which is not still not too shabby for a few hours work.