The camp concluded with two games against the Blues franchise in Auckland, with Williams facing YouTube sensation Taniela Tupou, who was nicknamed the Tongan Thor for his deeds at Auckland's Sacred Heart College.
The Messam team were in contention with an 8-7 scoreline at halftime, before the Blues pulled away late to win 25-7.
The Latimer team faced the top Blues side and were hammered 62-0.
Chiefs player development manager Dave Dillion said the players would be better for the opportunity.
"It is good for these boys to get game time at this level so they know what to expect when they come into high performance rugby."