He achieved a huge feat last week, with his debut single, Count On Me, becoming the highest-charted winner's song since 2013.
But this week, things have taken a turn for the worse, for The Voice's Judah Kelly.
According to News.com.au, the track fell to No. 53 on the ARIA charts, after debuting at No. 19 last week.
Sales figures also dropped this week, with it selling just 3,506 copies, despite selling 7,980 in the first week.
The publication previously reported Judah's chart success last week, with Judah getting a far better result than The Voice winners from the last two years.
A hard hit! Sales figures also dropped this week, with it selling just 3,506 copies, despite selling 7,980 in the first week (Judah is pictured with coach Delta Goodrem)
In 2014, champion Anja Nissen's track debuted at No. 42, while 2015's Alfie Arcuri barely made a dent in the singles chart, landing at No. 89.
With Judah shifting 7,980 copies of his winner's single, it was the most sold since 2013 winner Harrison Craig.
More than 1.3 million people tuned in to see 20-year-old Judah take home the reality TV show title, beating out runner-up Hoseah Partsch.
'I can't believe I actually made it this far. Thank you. It's all I can say,' an emotional Judah told the audience after he won.
Despite the bad news for Judah, he still has a friend in mentor Delta Goodrem.
Delta posted a video montage of her time on The Voice, featuring a picture of her hugging Judah.
'Celebrating an incredible season of The Voice', she wrote in the caption.
'Thank you to all the contestants who brought their talent to our screens this year and of course the mighty Judah Kelly'.