[2] After linking up with the club through NSW bowling coach Andre Adams, McAndrew made his first-class debut for Auckland on 5 February 2016 in the 2015–16 Plunket Shield, where he played three matches.
[3][4] McAndrew was first called up to the New South Wales squad in 2019, where he made his List A debut on 22 September 2019, in the 2019–20 Marsh One-Day Cup.
[5] In June 2020, McAndrew was included in the New South Wales contracts list ahead of the 2020/21 season, where he appeared in the 2020–21 Marsh One-Day Cup.
[8] McAndrew made his Sheffield Shield debut in the opening game of the 2021-22 Sheffield Shield season against Western Australia, taking 3/71 in the first innings, including Test players Cameron Bancroft, Cameron Green and Shaun Marsh, and scoring 65*.
[9] McAndrew cites his reasons for moving to South Australia as being due to his ambition to play Sheffield Shield in addition to white-ball cricket.