Clark netted 26 points, and Sims added 24 and nine rebounds as the Hoyas (4-1) earned the fifth-prize prize at the Hawaii tourney.
Markel Starks and Hollis Thompson each added 12 points in Georgetown's win.
The Tigers (2-2) lost despite 22 points from Will Barton, and 20 points and six boards from Joe Jackson.
Couple mistakenly served bag of cash at McDonald's drive-thru
Benedict Cumberbatch's dramatic reading of R. Kelly lyrics is just what you need