Lawrence rebounded a missed shot by Kimberly Beck and beat the buzzer with a shot from the baseline to give sixth-seeded George Washington an improbable 55-53 comeback victory over No. 3 California on Monday night in the Greensboro Regional.
The winning shot was set up when Natasha Vital traveled while trying to call time-out for Cal (27-7) with less than 6 seconds remaining. Lawrence hit the game-tying shot moments earlier.
The winning shot sent the Colonials (27-6) into a delirious celebration that had to be put on hold for a moment as the officials checked the replay to make sure the shot got off on time.
Cal had been hoping to make it past the second round for the first time in school history but now can only stew over a bitter finish to the season.
Cal blew a seven-point lead in the final 4 minutes, failing to score over the final 3:20 of the game.
Antelia Parrish scored 15 points to lead George Washington, and Lawrence added 13.
Walker led Cal with 19 points and nine rebounds.
NEW ORLEANS REGIONAL
LSU 68, MARIST 49
In Baton Rouge, La., LSU's tallest and smallest players proved too much for Marist.
Lady Tigers center Sylvia Fowles had 19 points and 13 rebounds, and 5-foot-3 guard Erica White had 15 points to help LSU beat Marist in the second round, ending the Red Foxes' 22-game winning streak.
The 6-6 Fowles, playing her final game on campus, overcame double-teams all night. She also became the leading rebounder in the history of the Southeastern Conference with 1,527.
White scored all of her points in the second half on an array of perimeter shots and determined drives to the hoop to help second-seeded LSU (29-5) break open a close game.
Julianne Viani led seventh-seeded Marist (32-3) with 21 points, hitting five 3-pointers. Rachele Fitz had 11 points.
The Tigers advanced to face Oklahoma State on Saturday.
OKLAHOMA STATE 73, FLORIDA STATE 72
In Des Moines, Iowa, the whistle blew just in time for Oklahoma State.
Andrea Riley sank a free throw with 0.7 seconds left in overtime to give Oklahoma State a victory over a gritty Florida State team in the second round.
The back-and-forth game appeared headed to a second overtime when Riley was trapped 18 feet from the basket with time about to run out. She went up for what would have been an awkward shot, and official Teresa Dahlem whistled a foul on Florida State's Shante Williams just as the buzzer sounded.
The officials then checked the TV monitor and put 0.7 seconds on the clock. Riley, who had missed two free throws on her previous trip to the line, bricked the first one but nailed the second.
So, two years after going 0-16 in the Big 12, Oklahoma State (27-7) is in the round of 16.
LSU 68, MARIST 49
In Albuquerque, N.M., Pitt scored its biggest win ever in women's basketball, and guard Shavonte Zellous led the way.
The former track sprinter turned shooting guard scored 19 points and grabbed a key late rebound to lead the No. 6 seeded Panthers to a 67-59 win over third-seeded Baylor.
Pitt (24-10) is in a regional semifinal for the first time. Baylor (25-7) lost in the second round for the second year in a row.
The Bears were led by their frontline duo of Danielle Wilson with 15 points and Rachel Allison with 14. But Wilson went scoreless and without a rebound in the second half.
In Columbia, South Carolina dropped a heartbreaker, 72-69, to North Carolina State on Monday in the second round of the WNIT.
The Gamecocks (16-16) led for all but 2 minutes, 45 seconds.
Jordan Jones was the Gamecocks' leading scorer, notching 27 points and shooting 7-for-9 from 3-point range. Ilona Burgrova added 12 points, while Demetress Adams had eight rebounds.