With one out in the bottom of the 10th, freshman Carly Winger singled down the right field line. Junior Alex Sutton hit a single to center field, taking second on the throw, while Winger advanced to third. James then hit a single to left field, sending Winger home for the winning run.
Thorson struck out 18 batters in her 30th complete game and 15th shutout of the season. Friday's performance moved Thorson up Cal's career and single-season charts. She is now tied for second in single-season wins (31) and is third in strikeouts in a season (384). On the career charts, she is now third in strikeouts (994).
The game was a pitchers' duel between Thorson and Washington freshman Danielle Lawrie. Lawrie had a no-hitter into the fourth inning, but with one out, James singled to left field. Senior Haley Woods followed with a single to right field. The Bears loaded the bases after senior Emily Friedman drew a four-pitch walk, but Lawrie got two strikeouts to end the inning.
Cal threatened a few other times, including two long line drives by Woods - one caught at the right field wall and one at the left field wall.
With Friday's win, the Bears improve to 3-2 in extra-inning games this season. Cal's longest game of the season was a 13-inning contest against No. 3 Arizona, which the Wildcats won 4-2.
Cal hosts Washington in the Bears' final regular-season game Saturday at 1 p.m. A farewell ceremony for Cal's five graduating players will precede the game. UC Berkeley Chancellor Robert Birgeneau will throw out the first pitch.