Test tune-up: Khawaja scores 58 after Hazlewood duel

Usman Khawaja has made a half-century for Queensland against NSW in the Sheffield Shield. (Richard Wainwright/AAP PHOTOS)

Usman Khawaja's half-century has provided the highlight of a rain-affected second day in the Sheffield Shield clash between Queensland and NSW at Cricket Central in Sydney.

Test opener Khawaja appeared immune to the form struggles plaguing those vying to partner him at the top for the Border-Gavaskar trophy, helping the Bulls make headway in reply to NSW's 239.