Sagarin's predictor isn't perfect...the day before the Marquette game it predicted that Wisconsin would go 12-6 in the B1G...but it currently projects Georgetown going 1-17 in Big East play.
What's the weakest SOS to ever make the tournament as an at-large? Georgetown's SOS is going to be hovering around the century mark despite playing in the BEast.
If they went 23-6 (12-6) with a win against Cuse....their RPI would 30 and SOS would by 97 (per RPI Wizard). A few years back, St. Bonaventure's RPI was 30 but they were left out of the tournament with a 112 SOS. One more lose knocks their RPI back to 40. I don't think 40 RPI and 97 SOS gets it done. Georgetown can only lose more games for the entire season. They are not coming close to sniffing the tournament.
I looked at the wrong year for St. Bonaventure. Their SOS was 95. So 23-6 might not be enough for Georgetown to get in. They might have to go 24-5.