BU - REG ( haven't played vs him for long time so only 400hands, looks standard 200z tag)
SB - REC 41/21 over small sample

On the turn I think this combo make good 2 streets bluff. Blocking 98,K9,AK,T9 and his bluffs A9. Yeah he have AK there sometimes but in general people cbetting those so I'm not super concerned and will treat K9 as nuts here. (my bluffs Kx, little 9x; and random Ax to for balance river K, value KQ+). River is quite bad for this exact hand, think his calling range consist from made hands only (maybe K8,A8,A9 only draw hands), bluffing vs pair at nl200z (bit stationy) not ideal