2014: ATP Tour debut After his success at the
US Open, Jasika made his
ATP World Tour debut in September, after he was given a wildcard 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: First ITF title 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 quarterfinal 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: Major debut Jasika made his Grand Slam debut at the
2016 Australian Open after being awarded a wildcard. He won his first round match, beating
Illya Marchenko in four 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 semifinals, but no finals. In December, Jasika won the
Australian Open wildcard play-off, earning him direct entry into the
2017 Australian Open. Jesica ended the year with a ranking of No. 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 the first round 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 quarterfinal of
Shanghai Challenger and in October, the quarterfinal of the
Canberra Challenger. Jasika ended 2017 with a ranking of No. 276.
2018–2019: Two-year suspension for positive test for drugs Jasika commenced the season by reaching the quarterfinal of the
Playford Challenger before losing in the first round of the
2018 Australian Open – Men's singles qualifying. Jasika was suspended from professional tennis by ASADA for two years until March 2020. At the
2023 Australian Open, Jasika lost in the first
qualification round to
Denis Kudla. He also had to qualify for the
2024 Australian Open but this time he overcame the last hurdle defeating
Abedallah Shelbayh in the round three qualifying match and reached the main draw after an absence of seven years. Jasika also competed in the
2024 French Open – Men's singles qualifying losing to
Dalibor Svrcina in straight sets. At the
2024 Wimbledon Championships – Men's singles qualifying he lost to
Zizou Bergs also in straight sets. He would go on to claim five ITF futures titles in a row, two in
Indonesia and three in
Australia which would result in a 29 match unbeaten run. His streak would end at the quarterfinal stage at the
2024 City of Playford Tennis International, where he was defeated by eventual champion
Rinky Hijikata in three tight sets. Jasika would go on to finish the year off at a career high ranking of world No. 177 on 25 November 2024.
2025: Australian Open wildcard Jasika received a wildcard into the main draw at the
2025 Australian Open, losing to
Hugo Gaston in the first round. However, he won the inaugural Australian Open 1 Point Slam title, defeating
Priscilla Hon in the final and winning $60,000 in prize money. ==ITIA two-year ban ==