It was supposed to be a routine training session for the Australian side, but the first-half injury to Kurt Tippett caused some discomfort for the former Wallaby.
Tippett missed the game against South Sydney due to the ankle injury he sustained in the previous round.
The Blues lost 2-0.
Buster has made an instant impact for the Blues, making a couple of important saves during the pre-season.
He had the chance to score twice, as he showed his quality and the skill of the backline by keeping a tight ball to goalkeeper Josh McGuire.
But the winger missed a chance to make a crucial save on Kurt Tuckett’s goal in the opening stages of the second half.
Tuckett made a couple more excellent saves in the final minutes of the game, and he should have done better.
“Buster is a good player,” coach Ricky Stuart said.
“I like his skill level.
We know he can score goals.
But he needs to do a better job of staying fit.”
He’s been out with an ankle injury for two weeks now.
He’s been playing a lot of football and we’re happy he’s got the chance.
“Buster, who joined the Blues from the Adelaide Crows in 2017, had a quiet start to the season.
The winger made three saves in his first two games, but his performances dipped in his third.
After an impressive debut campaign with the Blues in 2017-18, Tippetts knee injury was the main reason for the club to pull the plug on him.
Buster will be hoping he can bounce back after a couple months away from the field.
The Blues will face another tough test against the Melbourne Storm in the Super Rugby clash on Sunday.