Omar Jasika

Jasika commenced the season by reaching the quarter final of the Playford Challenger before losing in round 1 2018 Australian Open – Men's Singles Qualifying. Jasika was suspended from professional tennis by ASADA for two years after testing positive to cocaine in December of 2017. Jasika will be eligible to play again in March 2020.

Jasika has a career-high singles ranking of World No. 239 achieved on 3 April 2017.

Jasika commenced the year with a wildcard into the Happy Valley Challenger where he reached his first ATP Challenger Tour final. At the 2017 Australian Open, Jasika lost in round 1 to David Ferrer. In February, Jasika won his first Challenger title in Burnie. In March, Jasika returned to the ITF circuit in Australia, reaching the semi final of the F2 in Canberra. In July, Jasika travelled to North America and competed on the Challenger Circuit, winning just one match. In September, Jasika reached the quarter final of Shanghai Challenger and in October, the quarter final of the Canberra Challenger. Jasika ended 2017 with a ranking of 276 .

Jasika made his grand slam debut at the 2016 Australian Open after being awarded a wild card. He won his first round match, beating Illya Marchenko in 4 sets; he subsequently lost to former finalist Jo-Wilfried Tsonga in the following round in straight sets. Jasika spent the remainder of the year predominantly on the Futures circuit across North America and Europe, making numerous quarter and semi finals, but no finals. In December, Jasika won the Australian Open wildcard play-off, earning him direct entry into the 2017 Australian Open. Jasika ended the year with a ranking of 367.

Jasika commenced 2015 at the Onkaparina Challenger where he drew No.1 seed and world No.80 Blaž Rola. He lost in three sets. Jasika competed in the qualifying for the Australian Open, when he won two rounds, but lost in the final round to Marius Copil. In February, he played in the Australia Futures 1 tournament, where he lost in the final to Brydan Klein. In March, Jasika headed to China where he made the final round of qualifying in both Guangzhou and Shenzhen Challengers before heading to Guadeloupe where he qualified for and made the quarter final of the Guadeloupe Challenger. In May, Jasika won his first ITF title in Changwon. In July, Jasika won his second ITF title in Kelowna, dropping just one set along the way.

Omar Jasika (Bosnian pronunciation: [jǎsika] ; born 18 May 1997) is an Australian tennis player. He is the 2014 US Open boys' singles champion defeating Quentin Halys in the final. Jasika along with Naoki Nakagawa also won the 2014 US Open boys' doubles title after defeating Rafael Matos and João Menezes in the final. In winning both, Jasika became the first player in 28 years to win both the boys’ singles and doubles events at the US Open.