Andy Murray has been playing brilliant tennis in Melbourne, but he’s shown signs of frustration and agitation on court.

It’s understandable why.

The world No. 2’s wife, Kim, is due to give birth to the couple’s first child next month, and there is always the possibility that she will go into labor before then.

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Frustrated, distracted Murray 'not proud' of on-court behavior in Oz

Frustrated, distracted Murray 'not proud' of on-court behavior in Oz

On top of that, Nigel Sears—Murray’s father-in-law and Ana Ivanovic’s coach—collapsed courtside last week at the Australian Open.

Sears is believed to be in good health, thankfully, but it’s clearly been a distracting and challening week-and-a-half for the second seed at the season’s first Slam.

"I'm not particularly proud of the way I've handled myself on the court,” Murray told *The Telegraph*. “…I don’t think that my behavior on the court has been impeccable. I’ve showed a lot of emotion and have been getting upset from the beginning of matches. But one thing I’ve done very well is to fight for every single point, not give away games and stuff.

"Even when I’ve been broken I’ve fought hard in the next game, and made it very difficult for my opponents.”

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Frustrated, distracted Murray 'not proud' of on-court behavior in Oz

Frustrated, distracted Murray 'not proud' of on-court behavior in Oz

He’s not kidding.

The 28-year-old, who will play Milos Raonic in the semifinals on Friday night, has dropped only two sets—one to Joao Sousa and another to David Ferrer—in the tournament. He’s defeated Alexander Zverez, Sam Groth, Sousa, Bernard Tomic, and Ferrer en route to the semi.

"We know that right now it's a little bit complicated for him, with much to handle," Amelie Mauresmo—Murray’s coach— said, according to ESPN.com. "He responded well physically because there have been some harsh passages, and so there are ups and downs. But he still manages to beat Ferrer after a big fight and it was a beautiful performance. He knows he can count on us."

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Frustrated, distracted Murray 'not proud' of on-court behavior in Oz

Frustrated, distracted Murray 'not proud' of on-court behavior in Oz

The Australian Open has been a demon of sorts for Murray. He’s played exceptional tennis throughout his career Down Under, but has lost in the final of the Happy Slam four times.

If he beats Raonic, the two-time major winner will face the almighty Novak Djokovic for the title.

Djokovic has beaten Murray three times in the Australian Open final.

Follow Brad Kallet on Twitter @brad_kallet.