Marnus Labuschagne has said he was 'disappointed' not to make a 'really big hundred', after scoring 108 on first day of the fourth Test against India at The Gabba. Scoring his first century of the series, the 26-year-old insisted his job is to score runs for his side and that he takes advantage at the crease after settling into the game. A productive first day for Australia saw the hosts close at 274-5, with an inexperienced Indian attack struggling to impose themselves on the match, despite getting off to a good start with the wickets of openers David Warner and Marcus Harris. Having been in the spotlight for scuffing claims during the third Test, Steve Smith put together 36 runs, with Labuschagne confident the media attention does not affect the former captain.