Smith posts sixth Test ton of the year

Steve Smith has posted a century at the MCG against West Indies, the sixth Test ton of the year for Australia's skipper.

Australia's Steve Smith has capped a magnificent 2015 by posting his sixth Test ton of the year. (AAP)

Steve Smith has capped a magnificent 2015 by posting his sixth Test ton of the year.

Smith reached three figures after lunch on day two of the Boxing Day Test at the MCG, where Australia continued to pile on runs against West Indies.

The 26-year-old was recently named the ICC cricketer of the year, while he is currently the leading run-scorer in the world for 2015.