About
Left-handed batting and bowling all-rounder who has played first-class cricket for New South Wales and South Australia.
Before fame
He played for Australia's under-19 national team as a teenager.
Trivia
He is known as a slow left-arm orthodox bowler.
Family life
He grew up with his family in St Leonards, New South Wales.
Associated with
All-rounder Shane Watson came to New South Wales the year after O'Brien left.
