Omar Jasika
Omar Jasika 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.
Jasika has a career-high singles ranking of World No. 239 achieved on 3 April 2017.
Personal life
Jasika was born in Melbourne, Australia. He is of Bosnian descent. His parents, Admir and Sabina, emigrated from Bosnia and Herzegovina to Australia during the Bosnian War before Omar was born. He is the eldest child in his family and his brother, Amor, is also an aspiring professional tennis player. Jasika began playing tennis at the age of six. He attended South Oakleigh College throughout his schooling years.Junior career
ITF Junior finals (4)
Singles: 4 (2 titles, 2 runners-up)
Outcome | No. | Date | Tournament | Surface | Opponent | Score |
| Runner-up | 1. | 30 July 2011 | Auckland, New Zealand | Hard |  Chris Simich | 5–7, 4–6 |
| Winner | 1. | 10 March 2013 | Nonthaburi, Thailand | Hard |  Cameron Norrie | 7–5, 6–4 |
| Runner-up | 2. | 16 January 2014 | Traralgon, Australia | Hard |  Alexander Zverev | 5–7, 2–6 |
| Winner | 2. | 7 September 2014 | New York City, United States | Hard |  Quentin Halys | 2–6, 7–5, 6–1 |
Junior Grand Slam finals
Boys' Singles
Boys' Doubles
Professional tour
2014: Tour Debut
After his success at the US Open, Jasika made his ATP World Tour debut in September, after he was given a wild card into the Malaysian Open. He drew Rajeev Ram in round one, and won the first set, and was within 2 points of the match in the second, before losing in three sets. In October, Jasika made his first final at the Australia F7 in Cairns.2015
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.
2016
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.
2017: First Challenger title
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 276.2018
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.ATP Challengers and ITF Futures finals
Singles: 6 (3 titles, 3 runners-up)
| ATP Challengers |
| ITF Futures |
Outcome | No. | Date | Tournament | Surface | Opponent | Score |
| Runner-up | 1. | 11 October 2014 | Cairns, Australia | Hard |  Jarmere Jenkins | 6–3, 3–6, 4–6 |
| Runner-up | 2. | 1 March 2015 | Adelaide, Australia | Hard | Brydan Klein | 4–6, 7–6, 2–6 |
| Winner | 3. | 31 May 2015 | Changwon, Korea | Hard | Connor Smith | 6–3, 6–4 |
| Winner | 4. | 5 July 2015 | Kelowna, Canada | Hard | Eric Quigley | 3–6, 6–4, 7–6 |
| Runner-up | 5. | 7 January 2017 | Happy Valley, Australia | Hard | Peter Gojowczyk | 3–6, 1–6 |
| Winner | 6. | 4 February 2017 | Burnie, Australia | Hard |  Blake Mott | 6–2, 6–2 |
Doubles: 1 (1 titles, 1 runners-up)
| ATP Challengers |
| ITF Futures |
Outcome | No. | Date | Tournament | Surface | Partner | Opponents | Score |
| Runner-up | 1. | 1 November 2015 | Traralgon, Australia | Hard | Bradley Mousley | Dayne Kelly Marinko Matosevic | 5–7, 2–6 |
| Winner | 2. | 8 May 2016 | Bol, Croatia | Clay | Bradley Mousley |  Tallon Griekspoor Tobias Simon | 7–5, 7–6 |