As Sanesuke was adopted as the main line of the family of Saneyori (Ononomiya Line), Sukehira also benefitted to move up the promotional ladder as a government officer together with his elder brother by blood, FUJIWARA no Tsunemichi.
実資は実頼の家系（小野宮流）の嫡流となっていたため、資平は三歳上の実兄の藤原経通と並んで官途を昇ることとなった。