25/50 TT OTB vs Grimstarr

[yellowsub]

25/50 on FTP 5 handed, 8.8k effective

grim's been reraising me a good deal, and im handling it ok, standard short handed aggro game.

folds to my button i pot TT, grim in BB reraises over the pot to 725.
i call (?)

flop 952r grim bets 1250, i call (?)

turn 2 grim checks i check (?)

river A grim bets 2300 into 3975, i fold (?)

comments on all streets appreciated