Snowboarder Zoi Sadowski-Synnott has claimed New Zealand’s first-ever Winter Olympics gold medal. Sadowski-Synnott, 20, saved her best for last, posting a score of 92.88 on her final slopestyle run at the Beijing Games on Sunday. The New Zealander said the win was “unreal” coming off the back of two gold medals in slopestyle and big air at the 2022 X Games in January. She said going into the final run she knew had to replicate her performance of the X Games to win Olympic gold. “I just took everything I had in me to try and land it. I knew going into that last jump I was going too fast so in t…