100-200 Hand...did anyone play it well?

[Big Dave D]

Hi

This is a hand I observed, but didnt actually take part in. The play, certainly by the supposedly good player struck me as very unusual, but I accept I may be out of my depth. Here goes.

It was full game, with quite a lot of aggression, often on marginal looking hands. However, this was still mostly resulting in two or three way action to the flop. A seemingly loose player raises mid-late. The very good player calls on the button. True to table form, the blinds passed. The flop came T84 mixed suits. The opener bet and the button called. The river came a Q and the opener bet...the button raised, reraised, capped at 4 bets. The river was a seemingly blank, and the opener check-called. The opener had QTo and the button had J9s. Comments?