In January 2013, he competed in his first ATP main draw event at the 2013 Australian Open, but has struggled in transitioning from Juniors onto the professional circuit, reaching his highest singles ranking of World No.

Later in 2009, Saville was a part of the victorious Australian Junior Davis Cup Team with teammates Jason Kubler and Joey Swaysland.

[6] Saville then won the junior 2011 Wimbledon title, beating Lucas Vrnac, Evgyny Lovskiy, Thiago Moura Monteiro, Joris De Looreand, and Kaichi Uchida on his way to the final.

[7] In 2012, Saville once again made it to the final of the junior Australian Open, where he beat opponent Filip Peliwo in three sets.

The following week he was awarded a second wildcard into the main draw of a futures tournament held in Berri, South Australia, the birthplace of Saville.

In preparation for the junior Davis Cup finals Saville was awarded his third wildcard into a futures event held in Darwin.

Saville was awarded a wildcard into the 2010 Australian Open qualifying draw where he fell in the first round to Frenchman Alexandre Sidorenko 1–6, 1–6.

Following the Australian Open Saville was awarded a wildcard into his first ever challenger event in Burnie, he went down gallantly in three sets to Dayne Kelly 6–4, 3–6, 4–6.

In March Saville traveled to Spain to train at the AIS headquarters and in doing so entered a Spanish futures tournament, he would lose in the first round of qualifying.

Saville entered three more Australian future tournaments later that year but failed to make it past the first round.

Following his runner up appearance at the Australian Open juniors he was once again granted a wildcard into the challenger held in Burnie but fell in the first round to Paolo Lorenzi.

He would hit some form at the end of 2011 where he made his first ever professional quarterfinal in the last future tournament of the year held in Australia.

Saville was awarded qualifying wildcards into the events held in Brisbane, Sydney, and the Australian Open.

After a number of early round losses in futures and challenger tournaments in Australia, Japan and the United States.

Saville finished his year with a semifinal loss at the Australian Open Wildcard Playoff to Ben Mitchell in straight sets.

Saville was given a wildcard into qualifying at the 2014 Australian Open where he lost in the first round to Paul Capdeville in three sets.

Saville next competed in the Australia 2014 Futures F1 event in Happy Valley where he reached the final, and went down in straights sets to Jarmere Jenkins.

[16] After losing in the second round of the Australia F4 event, Saville went on to win his third Futures title of the year in Glen Iris.

[21] Saville played his final grass court tournament for the year at the 2014 Hall of Fame Tennis Championships in Newport.

[26] Saville returned from injury in October and made the final of the Australia futures F8 event, but lost to Jarmere Jenkins in straight sets.

Saville was given a wild card into the 2015 Australian Open, where he lost in round 1 to Tim Smyczek in straight sets.

In August, Saville won the USA F24 title against Kevin King, but lost in round 1 of qualifying for the US Open to Karen Khachanov.

In October, Saville returned to Australia where he made the final of the Brisbane F9, losing to Gavin van Peperzeel in three sets 6–7, 6–2, 6–7.

In February, Saville made the semi-final of the 2016 Launceston Tennis International before heading to Asia where he played in a number of Challenger tournaments, with limited success.

After a disappointing 2016 campaign, Saville admitted that the pressure of expectations had gotten to him in the past, but was "finding his mojo" again after reuniting with former coach Des Tyson.

[35] Despite his hopes, 2017 was a disaster year for Saville, who posted just nine main draw singles wins on the Challenger and Futures circuit and failed to make it past the second round at any tournament.

In October, he reached the first Challenger final with new partner fellow Australian Max Purcell in Traralgon, Australia.

At the Olympics, Saville was entered as a last-minute alternate for Hungarian Márton Fucsovics who had withdrawn due to right shoulder injury.

Saville announced his retirement from professional tennis in January 2025, with a final appearance at the 2025 Australian Open where he partnered Li Tu as a wildcard pair.