Tomljanović reached the third round at the Miami Open by defeating Kristina Mladenovic and 30th seed Garbiñe Muguruza.
She ended up losing to American Varvara Lepchenko, in three sets.
Tomljanović started clay-court season at the Charleston Open.
In the first round, she upset last year semifinalist Stefanie Vögele.
1992
Tomljanović was born in Zagreb to Croatian father Ratko Tomljanović who played handball professionally (winner of the 1992 and 1993 handball European Cup) and Bosniak mother Emina.
Her older sister Hana played tennis for the University of Virginia.
Ajla began playing tennis at the age of six and moved to Florida for higher level training when she was 13.
1993
Ajla Tomljanović (born 7 May 1993) is an Australian professional tennis player.
She has won four singles and three doubles titles on the ITF Women's Circuit.
On 3 April 2023, she reached a career-high singles ranking of world No. 32.
2008
Tomljanović played her first professional ITF Circuit event in October 2008 in Mexico City, and lost to Estefanía Craciún in the semifinals.
She then qualified for another ITF event in Mexico City, but lost to Karolina Kosińska in the second round.
2009
Tomljanović was an accomplished junior player, having won the 2009 Australian Open girls' doubles title with Christina McHale.
She reached a combined career-high junior ranking of world No. 4, on 30 March 2009.
Tomljanović won the 2009 Australian Open girls' doubles title with Christina McHale, defeating Aleksandra Krunić and Sandra Zaniewska in the final.
In January 2009, she qualified for the ITF event in Boca Raton, Florida, where she lost to Heidi El Tabakh in the second round.
Tomljanović was awarded a wildcard for Indian Wells Open in, and lost to Angela Haynes.
Tomljanović then suffered three consecutive losses in the second rounds of Redding, California, Osprey, Florida, and Makarska, Croatia, losing to Rika Fujiwara, Kateřina Kramperová and Ana Savić, respectively.
At the ITF event in Zagreb, she lost to Tereza Hladíková in the first round.
On 10 May 2009 in Zagreb, she won her first ITF doubles title, partnering with fellow Croatian Petra Martić.
2012
Tomljanović missed most of the 2012 season due to mononucleosis.
During the preseason, Tomljanović began working with coach David Taylor, former Australian Fed Cup captain, who had just parted company with Samantha Stosur.
She started the year at the Shenzhen Open, where she lost in the first round to eighth seed Annika Beck.
Tomljanović then played as a wildcard at the Sydney International.
She beat former world No. 5, Daniela Hantuchová, in the first round.
She was defeated in the second round by Madison Keys, in three sets.
Ranked 67 at the Australian Open, Tomljanović defeated Tadeja Majerič in the first round.
2013
In the second round, she lost to 13th seed Sloane Stephens in a three-setter.
She lost at the Pattaya Open in the first round to qualifier Alla Kudryavtseva, in straight sets.
At the Mexican Open, she reached the quarterfinals by beating fourth seed Magdaléna Rybáriková and qualifier Victoria Duval.
However, she lost in her quarterfinal match to eighth seed Zhang Shuai.
2014
Before 2014, Tomljanović played for her country of birth, Croatia.
She began competing for Australia at the 2014 US Open after obtaining permanent residency in Australia.
In the latter stages of 2014, Tomljanović took up permanent residency in Brisbane to be closer to her cousin Isabella Bozicevic's family who were based in the neighbouring Gold Coast as well as begin training at the Queensland Tennis Centre and in doing so switched allegiances to represent Australia in the four Grand Slams.
2015
On 5 January 2015, she peaked at No. 47 in the doubles rankings.
2017
At the Indian Wells Open, she lost in the second round to 17th seed Sloane Stephens.
2018
For the next four years she was required to represent Croatia at all non-Grand Slam events, until she was granted Australian citizenship in January 2018, allowing her to represent the country at all events on the WTA Tour.
In 2018, her application for Australian citizenship was approved which allowed her to begin representing her adopted country at WTA Tour events as well as competing for Australia in the Fed Cup.
Tomljanović is coached by Fernando Martínez and Rene Gomez.
Along with tennis, she is also a fan of basketball.
