Australia batsman Joe Burns is not expecting a recall to the starting XI against South Africa, despite scoring a Sheffield Shield century this week.
Burns scored a valuable ton for Queensland on Wednesday, but feels it might not be enough to unseat Shaun Marsh, who is also in good form for Western Australia.
Marsh is the current holder of the opening slot alongside David Warner, after Burns was dropped for the third Test against Sri Lanka earlier this year.
The Bulls opener said of his chances: "It's hard to say. I am not an incumbent Test opener.
"There is a queue and all I can do is make runs."
He added: "In the Sri Lankan series I didn't play well enough. I just had to learn as much as I could from the experience.
"But it's satisfying to bounce back in my first Shield game."
Marsh made 73 for WA this week, after recovering from a hamstring injury he picked up in the Matador Cup.
The first Test against the Proteas will be played on Marsh's home ground, the WACA in Perth, from 3 November.