As a result, through the influence of Yoritomo, Yoshiyasu was promoted unusually fast from the Director of Sanuki Province to Samanokami (Military Administrator), Uhyoenokami (Captain of the Right Division of Middle Palace Guards), Sangi (Councilor), Sahyoenokami (Captain of the Left Division of Middle Palace Guards), Kebiishi no Betto, (the Superintendent of the Imperial Police), Gonchunagon (Provisional Middle Councilor), and Junii (Junior Second Rank).
結果、頼朝の威光を背景に、讃岐守・左馬頭・右兵衛督・参議・左兵衛督・検非違使別当・権中納言・従二位と異例の栄進をする。