Prop Alaalatoa sticking with Crusaders

The Crusaders have retained the services of rising prop Michael Alaalatoa for two more Super Rugby seasons.

The Crusaders have retained the services of Michael Alaalatoa for two more Super Rugby seasons. (AAP)

Sydney-born Crusaders prop Michael Alaalatoa has extended his Super Rugby contract for a further two seasons.

Alaalatoa has enjoyed an impressive debut season for the second-placed side, making seven appearances off the bench to replace All Blacks tighthead Owen Franks.

The 24-year-old, who attended Sydney's Newington College, made just one appearance for the NSW Waratahs in two seasons.

Former Samoan under-20 representative Alaalatoa is the son of former Samoan international Vili and the older brother of current Brumbies prop Allan.