Otago Boys' remained unbeaten in this year's Highlanders First XV competition when it scored nine tries to beat Waitaki Boys' 53-3 at Littlebourne.
Otago Boys' finished top and will play Waitaki Boys' in the final next weekend.
In the other top four game Southland Boys' beat Kings 22-15.
St Kevin's College finished top of the middle four when Brodie Flannery scored a try in the last play of the day to beat South Otago 28-25 at Balclutha.
Gore beat Dunstan 35-5 and will play St Kevin's in the middle four final at Oamaru.
John McGlashan College topped the bottom four when they beat Kavanagh College 10-0. Menzies College beat James Hargest 55-0 and will play McGlashan in the bottom four final.
