Chapman’s 290 runs was the most by any player in a five-game T20I series.
The 28-year-old, who was named player of the series, said he was happy to see his hard work pay off.
“I had to check back into my room because I already paid my bill and checked out. I sort of had my suitcases at the ground ready to go and brought them back to the hotel and started unpacking when I got back,” he said of his late call-up to the ODI squad.
“Pretty thankful that they’re keeping me on ... I feel like I’ve been chipping away in the background over the last couple of years and a few months. I guess it’s nice to see some reward for some hard work.”
The Black Caps tour party will expand to 16 with the addition of Chapman and new arrivals Tom Blundell and Henry Nicholls, while T20 squad member Dane Cleaver is returning home to New Zealand as planned.
The first of the Black Caps’ five-game ODI series against Pakistan starts in Rawalpindi on Thursday.