It was announced in April 2015 that Tony Walmsley would be given the permanent manager position, having previously filled the role in an interim capacity.
His position was taken by the retiring Matthew Nash, whose place in the squad was taken in turn by former Adelaide United and Young Socceroos goalkeeper Paul Izzo.
[6] The Mariners won their opening pre-season friendly, a 2–1 victory over F3 Derby rivals Newcastle Jets in a training match.
[8] Central Coast were eliminated in the first round of the 2015 FFA Cup by Wellington Phoenix, an error from goalkeeper Paul Izzo and a missed penalty from Roy O'Donovan consigning the team to a 1–0 loss.
[11] Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.