[milesdyson]

the main point here is understanding why you would raise the turn but not bet the river. if you'd raise the turn you think worse hands are in his range. this doesn't make too much sense if you'd check the river, except that this turn isn't a 100% blank (T9 and the like). if it were that close (ie. you dont know if T9 or whatever is in his range) i would opt to call the turn and river.