South Australian Callum Ferguson hopes his latest century reminds national selectors that he’s still depositing the currency they most value – runs.

The seemingly forgotten Ferguson struck an unbeaten ton against Queensland on Sunday’s third day of the Sheffield Shield match in Adelaide.

The Bulls, with Joe Burns not out 88, are 2-128 at stumps – 203 runs ahead of the Redbacks.

SA declared their first innings 75 runs behind the visitors, calling a halt just one ball after Ferguson registered his 10th first-class ton, a neat 100 not out.

Ferguson was rated a Test contender five years ago, the same year he made his one-day international debut – and he averages a healthy 41.43 in his 30 ODIs.

But he’s still without a Test and his last appearance in Australia’s coloured clothes was in April 2011.

Ferguson, 29, covets another Australian call-up but believes all he can do is keep scoring big runs for the Redbacks to remind selectors of his talents.

“We have seen plenty of guys debut well into their 30s … I feel like I have got plenty of time to get some scores on the board and hopefully push for a baggy green,” he said.

Ferguson topped SA’s Shield batting averages last season and was fifth-highest scorer in the recently completed domestic one-day tournament.

He said his composed knock against the Queenslanders evidenced the growing maturity in his game.

“I have improved as a player and I’m in a really good place with my game … I’m ready to go if I get a call up,” he said.

Ferguson and Tom Cooper (75) put on an 140-run partnership before emerging bat Travis Head produced an eye-catching cameo – his first scoring shots were four consecutive boundaries from Ryan Le Loux’s legspin.

Head was bowled for 52 the ball after Ferguson reached his milestone and the Redbacks declared to try and breathe life into the game.

Queensland’s batsmen initially found the going tough against Chadd Sayers – the swing bowler fresh off a first innings hat-trick, took 2-21 from his initial 11 overs.

But Burns later found some fluency with Peter Forrest (38 not out) in an unbroken 96-run stand that looms as a platform to set a last-day target for the hosts.