Tajikistan rallied past Trinidad and Tobago 2-1 on Thursday night to reach the final of the 2022 King's Cup at Chiang Mai's 700th Anniversary Stadium.
Trinidad and Tobago broke the deadlock shortly before the 30-minute mark when Judah Garcia put them in the lead.
Tajikistan looked a much improved side after the break and Mukhammadzhon Rakhimov gave them the equaliser they were looking for five minutes into the second half.
Ehsoni Panshanbe grabbed the winner 15 minutes from time to put Tajikistan is Sunday's final.
Hosts Thailand were to face regional rivals Malaysia in the other match last night.
The winners of the match will meet Tajikistan in the final and the losers will face Trinidad and Tobago in the third-place play-off on Sunday.
England's Harry Kane and other European team captains will wear "OneLove" armbands during the World Cup in Qatar to fight discrimination, the Football Association announced on Wednesday.
Homosexuality is illegal in the Gulf state and organisers have battled to reassure rights groups that same-sex couples will not face action at the tournament, which starts on Nov 20.
Ten European nations, including England, France and Germany, have teamed up to support the season-long OneLove campaign to promote inclusion, which features an armband with a multi-coloured heart.