Cricket-Khawaja seals test spot with Twenty20 ton

MELBOURNE, Dec 21 (Reuters) - Usman Khawaja proved his fitness with an unbeaten century in the domestic Twenty20 Big Bash League at the weekend to secure his place in the Australia team for the second test against West Indies. Australia coach Darren Lehmann had said the top order batsman's place in the team for the Melbourne test, which starts on Saturday, was assured if he could prove he had recovered from a left hamstring strain. Despite having missed Sydney Thunder's first outing of th