This followed their 101-85 loss to front-runners Melbourne United on Thursday night despite playing in front of a crowd of 12,898 fans.
United outscored the hosts 35-19 in the third quarter, which proved to be the difference between the sides on Thursday night.
Shaun Bruce led the way for the Kings in the defeat, scoring 16 points while also adding five assists, two rebounds and one block.
In the Sunday night match, the board was tied early but broken in the purple and gold’s favour thanks to Kouat Noi and young gun Jaylin Galloway.
Sydney finished the first up by one before the Bullets fought back, entering half-time with a 13-point advantage.
Back-to-back jump shots from Angus Glover and Denzel Valentine pulled the deficit to 12 but Brisbane entered the final quarter up by 13 once more (80-67).
Traded baskets started off the final quarter, with Sydney struggling to break the margin before a dunk from Galloway and a jump shot from Jaylen Adams, had the Kings clawing at the lead ahead of fouls which saw Brisbane take home their ninth win of the season.
Adams top-scored for the Kings with 21 points, to go along with eight assists, two rebounds and one steal.
Other strong efforts came from Hunter (17 points and 10 rebounds), Noi (13 points and seven boards), Galloway (10 points and five rebounds) and Valentine (10 points and seven boards).
The Hoops Capital side now travel to Adelaide to face the 36ers on Thursday night from 7.30pm.
Three days later, they return home to Qudos Bank Arena to take on New Zealand from 3.45pm.
Crown toppling but ‘Kings still in fourth
THE Sydney Kings suffered their second-straight home loss on Sunday night, losing 101-93 to the Brisbane Bullets at Qudos Bank Arena but remain fourth on the ladder.