New Zealand's Will O'Rourke, Glenn Phillips, Finn Allen and skipper Mitchell Santner are the key players who will miss out on the match during the T20I series against Australia (Pic: X/@ICC)

Pacer Will O'Rourke underwent scans as he was suffering from a stress fracture in his lower back. Following the injury, he is set to be out of action for at least three months (Pic: X/@BLACKCAPS)

Meanwhile, Phillips has been ruled out of the series against Australia and will be re-assessed in a month's time. On the other hand, Allen is yet to recover from his foot surgery, following which he will be out of action for three months (Pic: X/@BLACKCAPS)

Santner is booked for abdominal surgery and faces at least one month on the sidelines (Pic: X/@BLACKCAPS)

The three-match T20I series between New Zealand and Australia will kick off on October 1. The first match will be played at the Bay Oval (Pic: X/@BLACKCAPS)