Yamato is in every episode
While the voice actors (from the original series and sequel) reprising their roles in the Japanese and English version, some of the voice actors for the latter itself didn't come back and being replaced by different voice actors, such as Naruto, Sakura, Might Guy, Kakashi and Sasuke. This is probably due to that they were still busy focusing on Naruto Shippuden.
As calculated, each episode contains 2 segments which makes a total of 102 segments.
Before the show airs, an omake from episodes 252 to 256 of Naruto: Shippuden was called "Rock Lee's Silly Chronicles" that uses a chibi design for the characters. In fact, it was released in the same year during the Japanese airing of Shippuden.