Galle, Feb. 2 -- Australia's stand-in skipper Steve Smith backed veteran opener Usman Khawaja to continue with the Test side as long as possible, saying that he is batting well and "age is just a number."

A dominant performance with the bat against Sri Lanka in Galle has left Australia with plenty of ponder ahead of the World Test Championship Final. Smith is backing in-form batter Usman Khawaja to prolong his international career and maintain his opening role for this year's ICC World Test Championship Final and the upcoming Ashes series.

Khawaja scored his highest Test score during Australia's crushing victory over Sri Lanka in the first Test in Galle, with the left-hander contributing a vital innings of 232 to move into the top five ...