Here's a randomly filled in NCAA Men's Basketball Tournament bracket. If you don't like this one, press reload for another. It's currently set to use the initial pairings for the 2019 tournament. Each game is chosen randomly as follows: if the two teams involved are seeded 'x' and 'y', then Pupset = min(x,y) / (x+y). (See note.) (Pick Kansas, please.)
FINAL FOUR ================= +-( 1)-Baylor----+ +-( 1)-Baylor----+ +-( 2)-Duke------+ | +-( 1)-Kansas----+ +-( 1)-Arizona---+ | +-( 1)-Kansas----+ +-( 1)-Kansas----+ South Regional ================= +-( 1)-Arizona---+ +-( 1)-Arizona---+ +-(16)-WRST/BRY--+ | +-( 1)-Arizona---+ +-( 8)-Seton Hall+ | | +-( 8)-Seton Hall+ | +-( 9)-TCU-------+ | +-( 1)-Arizona---+ +-( 5)-Houston---+ | | +-( 5)-Houston---+ | | +-(12)-UAB-------+ | | | +-( 5)-Houston---+ | +-( 4)-Illinois--+ | | +-(13)-Chatt'ga--+ | +-(13)-Chatt'ga--+ | +-( 1)-Arizona---+ +-( 6)-Colo St---+ | +-(11)-Michigan--+ | +-(11)-Michigan--+ | | +-( 3)-Tennessee-+ | +-( 3)-Tennessee-+ | | | +-( 3)-Tennessee-+ | | +-(14)-Longwood--+ | | +-( 2)-Villanova-+ +-( 7)-Ohio St---+ | +-( 7)-Ohio St---+ | +-(10)-Loyola Ch-+ | | +-( 2)-Villanova-+ +-( 2)-Villanova-+ | +-( 2)-Villanova-+ +-(15)-Delaware--+ West Regional ================= +-( 1)-Gonzaga---+ +-( 1)-Gonzaga---+ +-(16)-Geo St----+ | +-( 9)-Memphis---+ +-( 8)-Boise St--+ | | +-( 9)-Memphis---+ | +-( 9)-Memphis---+ | +-( 5)-UConn-----+ +-( 5)-UConn-----+ | | +-( 5)-UConn-----+ | | +-(12)-N Mex St--+ | | | +-( 5)-UConn-----+ | +-( 4)-Arkansas--+ | | +-( 4)-Arkansas--+ | +-(13)-Vermont---+ | +-( 2)-Duke------+ +-( 6)-Alabama---+ | +-(11)-RUTG/ND---+ | +-(11)-RUTG/ND---+ | | +-( 3)-Tex Tech--+ | +-( 3)-Tex Tech--+ | | | +-( 3)-Tex Tech--+ | | +-(14)-Mont St---+ | | +-( 2)-Duke------+ +-( 7)-Mich St---+ | +-( 7)-Mich St---+ | +-(10)-Davidson--+ | | +-( 2)-Duke------+ +-( 2)-Duke------+ | +-( 2)-Duke------+ +-(15)-CS Full---+ East Regional ================= +-( 1)-Baylor----+ +-( 1)-Baylor----+ +-(16)-Norfolk St+ | +-( 1)-Baylor----+ +-( 8)-N Caro----+ | | +-( 8)-N Caro----+ | +-( 9)-Marquette-+ | +-( 1)-Baylor----+ +-( 5)-St Marys--+ | | +-(12)-WYO/IND---+ | | +-(12)-WYO/IND---+ | | | +-( 4)-UCLA------+ | +-( 4)-UCLA------+ | | +-( 4)-UCLA------+ | +-(13)-Akron-----+ | +-( 1)-Baylor----+ +-( 6)-Texas-----+ | +-( 6)-Texas-----+ | +-(11)-Va Tech---+ | | +-( 6)-Texas-----+ | +-( 3)-Purdue----+ | | | +-(14)-Yale------+ | | +-(14)-Yale------+ | | +-( 2)-Kentucky--+ +-( 7)-Murray St-+ | +-(10)-San Fran--+ | +-(10)-San Fran--+ | | +-( 2)-Kentucky--+ +-( 2)-Kentucky--+ | +-( 2)-Kentucky--+ +-(15)-St Peters-+ Midwest Regional ================= +-( 1)-Kansas----+ +-( 1)-Kansas----+ +-(16)-TXSO/TAMO-+ | +-( 1)-Kansas----+ +-( 8)-SDSU------+ | | +-( 9)-Creighton-+ | +-( 9)-Creighton-+ | +-( 1)-Kansas----+ +-( 5)-Iowa------+ | | +-(12)-Richmond--+ | | +-(12)-Richmond--+ | | | +-( 4)-Providence+ | +-( 4)-Providence+ | | +-( 4)-Providence+ | +-(13)-S Dak St--+ | +-( 1)-Kansas----+ +-( 6)-LSU-------+ | +-(11)-Iowa St---+ | +-(11)-Iowa St---+ | | +-( 3)-Wisconsin-+ | +-( 3)-Wisconsin-+ | | | +-( 3)-Wisconsin-+ | | +-(14)-Colgate---+ | | +-( 3)-Wisconsin-+ +-( 7)-USC-------+ | +-(10)-Miami FL--+ | +-(10)-Miami FL--+ | | +-( 2)-Auburn----+ +-( 2)-Auburn----+ | +-( 2)-Auburn----+ +-(15)-Jax St----+