Flyhalf Marty McKenzie converted an Angus Ta'avao try after the hooter to grab a thrilling draw for the Waikato Chiefs as they rallied from 16 points down with 20 minutes to play.

Tries from flyhalf Josh Ioane, fullback Ben Smith, wing Matt Faddes and flank James Lentjes had the Highlanders in control of the contest and seemingly on course for a comfortable win.

But after scrumhalf Brad Weber and loose-forward Luke Jacobson had crossed for first half scores, Ta'avao bagged a brace to rescue the draw for the Chiefs.

All Black Smith had to be helped off the field during the final 10 minutes with what appeared to be a knee injury, while the Highlanders lost both loose forward Lachlan Boshier and lock Michael Allardice in the first half.