This post will be updated with information as it becomes available so keep checking back if you have any interest in Yuki Saito.
According to Sanspo, Saito's next outing will be in an exhibition game against the Chiba Lotte Marines on the 26th (1 inning). And it seems his next 2-3 outings (including the one on the 26th) will be in relief. His next start probably won't come until sometime in mid-March.
Daily Sports has a little more info: in addition to the relief outing on the 26th, they also mention that Saito will probably also make relief appearances during exhibition games on 3/2 (vs Yakult Swallows @ Sapporo Dome) and 3/6 (vs Yomiuri Giants @ Sapporo Dome). So the Fighters will pitch Saito on three days rest as a reliever and probably 6 or more days of rest as a starter.
And with the final block of camp beginning on the 24th (the Ichi-gun roster has the day off today), Saito also told reporters that he'd like to reserve one day for a lot of throwing (around 100 pitches).
After his 61-pitch bullpen session yesterday, Saito sat down with Yu Darvish to review footage that was taken during their sessions.