1)
Why does it say that he did "ha'Yashar b'Einei Hashem" like his father Amatzyah? Amatzyah veered from Hashem (25:27)!
1.
'Rashi': He did like the good 1 that his father did, but not like the evil that his father did.
2.
He did "ha'Yashar b'Einei Hashem" for the first half of his kingship, like his father. Both of them veered from Hashem in the middle of their reigns. However, it says similarly (27:2) that Yosam did "ha'Yashar b'Einei Hashem" like his father Uziyah, and there we cannot give this answer. (PF)


