Ubekistan prevailed 3-1 to grab the overall lead in the ultra-competitive Open section
Guptill was heavily involved in two pieces of action that defined last month's World Cup final, with his throw from the outfield deflecting off Ben Stokes' bat for four to give England a valuable six runs and allowing them to tie the game.
The 32-year-old Guptill was then run out off the final ball of the super over attempting the second run that would have given New Zealand the title. England eventually won their first 50-over World Cup by virtue of having hit the most boundaries.
"I guess you see it as the best and the worst day of your cricketing career," said Guptill, after he joined New Zealand's squad in Sri Lanka for their three-match Twenty20 series that starts on Sunday in Pallekele.
"The ebbs and flows of the game made it such a good one for the spectators. It was just unfortunate we came out on the other side of it."
England's spectators, still basking in the euphoria of that victory, did not spare Guptill as he stayed in the country on a short-term contract with Worcestershire to play Twenty20 cricket.
"I got a bit of stick from the crowd," Guptill said of his matches in England. "I think it was actually even home games I got a bit of stick.
"It's something you've just got to put up with and move on pretty quickly. I'm here now with the boys and raring to go."
For the T20 games, Guptill joined a New Zealand side that included just four players - bowler and captain Tim Southee, batsman Ross Taylor and all-rounders Mitchell Santner and Colin de Grandhomme - who drew the two-match test series.
New Zealand's focus over the next 12 months will be on the shortest form of the game, with the World Twenty20 in Australia scheduled for next October and November.
The Sri Lanka series, while not played in conditions they will expect in New Zealand or Australia, would allow the team to get back into the rhythm of the format, Guptill added.
"T20 World Cups are always good fun," he said. "With it being in Australia next year it's completely different conditions to what we face at home as well.
"It's going to be nice to start off our preparation here, playing in some trying conditions and then head home with a good five (match) T20 series against England to lead off the summer."
Ubekistan prevailed 3-1 to grab the overall lead in the ultra-competitive Open section
Victory underlines the dominance of Australia's women, who are also world champions in the 20-over and 50-over formats
Opener Shreyas Iyer clubs 64
The Norwegian lived up to the hype since his transfer from Borussia Dortmund to give the champions a perfect start to the season in the searing heat of East London
Emirates' medal tally sits on an impressive three, two gold and one bronze
Shreyas Iyer clubs 64, while Deepak Hooda makes 38
The Red Devils go down 2-1 to Brighton at Old Trafford
Mohammad Sharif Tahir and Ali Asad clinched the silver and bronze medals in the Men's Freestyle 74kg category and Men's Freestyle 57kg segment respectively