OKLAHOMA CITY (AP) Constance Quinn knew she was in trouble when she rounded third.
She went for the big play anyway, and scored the winning run on an obstruction call in LSU's 2-1 victory over UCLA on Thursday in the Women's College World Series.
It was tied at a run apiece in the fifth inning when LSU's Amber Serrett singled and to right field. Catcher Paige Halstead fielded the throw home and tagged Quinn, but Quinn was awarded the run because there was no lane for her to get to the plate.
''I knew it was going to be either an obstruction play or a called out,'' Quinn said. ''It was that close. But at that point you have to go in hard and hope for the best.''
Halstead disagreed with the call.
''You dream about making those plays when you're a little girl when you're a catcher,'' she said. ''I don't think I blocked the pathway. She made a great throw and it was a bang-bang play. It is what it is, it's in the past, and just looking forward to moving on.''
Quinn had two hits and Emily Griggs scored a run for LSU (49-20). The Tigers advanced to play Florida in a winner's bracket game Friday. UCLA will face Texas A&M in an elimination game Saturday.
Allie Walljasper (18-5) threw a complete game for LSU. She went without a strikeout, but her team's solid defense powered the win.
''My defense always has my back no matter what,'' she said. ''I'm more of a pitch-to-contact pitcher, so they always know what to expect. I just had great defense behind me the entire time, and I'm very thankful for them.''
UCLA entered the World Series as one of the nation's best home run-hitting teams, but the Bruins couldn't put one over the fence against Walljasper.
The Bruins (47-14) left seven runners on base.
''It does come down to timely hitting, but it's not really about - you don't get the luxury when you're facing the pitchers that we're facing here at the series to just be able to pick up every RBI,'' UCLA coach Kelly Inouye-Perez said.
Delaney Spaulding had two hits, and Zoe Shaw scored the only run for UCLA.
UCLA's Rachel Garcia (22-8) threw a complete game for the Bruins. She gave up six hits and struck out seven.
''Nothing has been very smooth for this team this year,'' Inouye-Perez said. ''So we're experienced in that. We're going to own it. We're going to figure out what the next step is.''
Follow Cliff Brunt on Twitter: www.twitter.com/CliffBruntAP