Things are never, ever, dull when Nick Kyrgios is on court. And the Australian showman was causing a stir around the Pimm's tents at the Queen's Club after accusing a line judge of "rigging" his first-round match against Roberto Carballes Baena.

Key points: Kyrgios was forced to play back-to-back matches due to severe rain delays

Kyrgios was forced to play back-to-back matches due to severe rain delays In the first he blew up at officials over line calls, before going on to win

In the first he blew up at officials over line calls, before going on to win He then lost his second-round match after again arguing with the umpire

In two matches played back-to-back due to rain delays, Kyrgios blew up at a line judge over calls, before having a go at an umpire for looking "ridiculous" due to his hat.

Kyrgios won his first match of the tournament 7-6(7/4), 6-3 but it was most memorable for a rant at the match officials he branded a "disgrace".

The 23-year-old was back on court to face Canadian youngster Felix Auger-Aliassime, losing 7-6, 6-7, 7-5 — and spent the last two games going through the motions.

He then threw his racquet over the grandstand after losing the match.

Throughout the two matches spanning three hours, Kyrgios argued with fans and officials, swiped a ball into nearby houses, threatened to walk off court and even made fun of experienced umpire Fergus Murphy's headgear.

At one stage he berated himself for "playing FIFA until 3:00am".

He also played some magical tennis but his remark near the end of the first set of his win over Baena, a match played on an outside court, could land him in trouble.

"I'm not going to give 100 per cent when I've got a linesman rigging the game, I don't want to play," Kyrgios said.

He came out fighting in his news conference, saying he and teenager Auger-Aliassime had resorted to "giving each other points" because the line calls were "outrageous".

"What's the difference? For me doing a code violation, why can't they get fined for having a terrible day in the chair?" Kyrgios said.

"Like, there's hundreds of thousands of dollars on the line. It's not a joke. They just think it's a joke because nothing happens to them after the match.

"I think it's ridiculous. Why not have another umpire ready to come in if that guy's having a terrible day? I don't understand.

"The calls are horrendous, but I get fined and he gets nothing, a slapped wrist. It's like a black star. It's rubbish."

'Your hat looks ridiculous'

Kyrgios wasn't a fan of the umpire's choice of headwear. ( Reuters: Tony O'Brien )

His second match of the day was relatively calm, although, at 5-5 in the third set, he resorted to casual trick shots.

The first match had been calm as well, until his opponent served a second serve on set point down at 5-6 that Kyrgios felt was long.

Loading

"The ball was this far out [holding hands about 30 centimetres apart], no joke. It's so far long. What are you actually doing up there?," Kyrgios was heard to say.

"Bro, it's taking the piss. I refuse to play."

Kyrgios was given a code violation for unsportsmanlike behaviour before taking a dislike to umpire Murphy's headgear.

"It's a joke, man. It's a serious joke. Like your hat looks ridiculous, also. It's not even sunny," he said.

Umpire Murphy said "be careful, Nick, be careful what you're saying," when he used the word "rigging". Kyrgios said later he had not meant it in that context.

Kyrgios called the tournament supervisor to court in the second set.

"Twenty people over there are saying it was way out. Go and ask them yourself.

"They're not going to lie to you, they've got no reason to," he said. "An 80mph [130kph] second serve. You actually can't be that bad."

Reuters/ABC