Akeem Wright.
In a mostly tight game the Nuggets hung on to a slim lead for most of the evening and were up by four heading into the final stanza, Fairfax media reports.
However, Nelson made all the running to win the last quarter 28-9 as Otago, perhaps still weary from last weekend's quadruple overtime thriller in New Plymouth, failed to find any answers.
The Giants' Josh Pace proved a handful, the league's leading scorer compiling a game-high 25 points.
Best for the Nuggets was Akeem Wright, who posted 15 points and 14 rebounds.
The Giants will meet the Southland Sharks in the final tomorrow night after the southerners beat the Wellington Saints 81-66 in the other semifinal.
