O'Neil was a third-round selection by the Sacramento Monarchs, chosen 30th overall in the three-round, 39-player draft. She joins first-rounder Kristin Hayne of Michigan State, second-round selection Chelsea Newton of Rutgers and No. 35 selection Cisti Greenwalt of Texas Tech on the Sacramento roster.
The 5-11 All-American guard led ISU in scoring with 16.6 points per game while ranking among the nation's leaders with 49.6 percent accuracy from behind the 3-point arc. O'Neil earned first-team all-Big 12 honors and honorable mention All-America recognition from The Associated Press and the WBCA/Kodak awards program.