AUSTRALIA CRICKET PLAYER STEVE SMITH

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The 22-year-old Smith is struggling to make an impact as either a bowler or batsman in the ODI series against Sri Lanka.

He has bowled just five overs in total in the three matches so far, taking no wickets and conceding 33 runs.

And as Australia's No.7 batsman, he had to wait until Tuesday's third match - to get an innings.

He made 18 before being run out when he failed to react quickly enough to a sharp return throw by Nuwan Kulasekara off the Sri Lankan's own bowling.

The NSW youngster's head dropped in despair at his dismissal and skipper admits Smith must improve.

"With Smitty, he hasn't had too much opportunity with the ball, didn't bowl last game and only bowled a couple of overs this game," Clarke said.

"And when you're batting at seven, it's always pretty difficult because generally when you get the opportunity to bat, your team's under pressure and you've got to score quite quickly.

"It's a tough one, he's a wonderful talent but he has to keep working on his game, especially batting.

"I'm sure he doesn't want to bat seven his whole career and he wants to be a frontline spinner, so he's got to continue working hard on his game."

Another player battling poor form is veteran wicketkeeper Brad Haddin.

The 33-year-old has played in both Twenty20s and the three one-dayers on the tour so far, notching 31 runs in five innings with a highest score of 12.

But despite Haddin being clean bowled by debutant Shaminda Eranga on Tuesday for five, Clarke is less concerned about his wicketkeeper's form slump.

"He's very experienced so I'm certain he'll turn that around," Clarke said.

"He's keeping very well and, as I've said to Hadds, 'just concentrate on the keeping'.

"Generally when he keeps well, he scores runs so I'm pretty sure he'll turn it around."