If this was the last Australian Open singles match of Nick Kyrgios' career — and, to be sure, it's hard to know with him, no matter what came out at his news conference — the big-hitting, big-talking tennis player went out rather quietly Monday night.

Britain's Jacob Fearnley produced an Australian Open shock on Monday by knocking out Nick Kyrgios on his much-anticipated return at his home Grand Slam. Fearnley, ranked No. 92 in the world, dispatched Kyrgios in straight sets to advance to the second round -- with the enigmatic 29-year-old Australian frequently displaying his anger and clutching at an apparent injury during the match.

The 29-year-old’s Australian Open return was short-lived — and he warned it could be his last singles match in his homeland.

Down here, it’s all about their own tennis yin and yang. One is a top 10-player who will do whatever he can to avoid controversy, while dedicating every ounce of his energy to the sport. The other is an unranked unicorn,

Nick Kyrgios hints that he won't return to play singles at the Australian Open, yet insists he has "no regrets" after his first-round defeat.

Nick Kyrgios has dropped a bomb surrounding his future at the Australian Open and it is not what fans want to hear. Nick Kyrgios says he can’t see himself playing men’s singles again at the Australian Open. The 29-year-old was knocked out in the first round of the tournament on Monday by Brit Jacob Fearnley (7-6, 6-3, 7-6).

Nick Kyrgios hinted at retirement from Australian Open singles matches after a disappointing first-round loss to Jacob Fearnley, citing injury frustrations. Despite his singles exit, he will continue competing in doubles alongside partner Thanasi Kokkinakis.

The 23-year-old claimed an impressive victory over Kyrgios, who admitted he may have played his last singles match at the Australian Open

Jacob Fearnley earned what he described as the “best” win of his career as he beat Nick Kyrgios at the Australian Open. The 23-year-old from Edinburgh had to contend with both Kyrgios and a raucous crowd roaring on the home favourite, but he dealt with both in hugely impressive fashion.

Nick Kyrgios is knocked out of the Australian Open by British No.3 Jacob Fearnley, with an abdominal injury hampering his performance and prompting lots of swearing

Kyrgios is hoping to compete at this summer’s Wimbledon but said he may have played singles at the Australian Open for the final time