He made a memorable One Day International debut a few days later, top scoring for the match with 81 runs from 97 balls and winning the Man of the Match award. With the recent retirements of two of Australia's longest-serving ODI opening batsmen in Adam Gilchrist and Matthew Hayden, Marsh was able to claim one of the opening batsmen positions for the 2008–09 season.
He made a notable debut in a One Day International match just a few days prior, scoring the highest number of runs with 81 from 97 deliveries and earning the Man of the Match award. Following the retirements of two veteran Australian ODI opening batsmen, Adam Gilchrist and Matthew Hayden, Marsh was able to secure his spot as an opening batsman for the 2008–09 season.