Thanks for the reply. I decided to get into the PWA and figure out exactly what the verbiage is, here is an excerpt from 23.10:

"A reserve pilot will not be rerouted into more than one duty period that originates after the end of his originally scheduled rotation and extends into either an X-day or a regular line day-off."

So looks like the worst they could do, barring a major WX or MX event is give me one extra duty period into a 3rd day.