On April 4, 2000, Osterman struck 21 batters in a row against Langham Creek High School to record a perfect game at the age of 17. Considering the general equality of talent at the high school level, her feat betters the Major League record for strikeouts in a game shared by Roger Clemens and Kerry Wood at 20; moreover, Osterman collected one more strikeout in two less innings in a performance on par with 1950's Minor League phenom Ron Necciai.
In 2001, she struck out 33 batters in a 14-inning 1-0 shutout over Cy-Fair High School. The performance ranked 10th on the strikeouts-in-a-single-game list, behind:
61, Alicia Holloway; Fairfield High School 0, Woodland High School 1; May 29, 2001; 30 innings
53, DeeDee Weiman; Cerritos Gahr 0, Lakewood St. Joseph 1; 1986; 29 innings
49, Jennifer Deering; Salinsa North Salinas 9, Gilroy 4; 1997; 34 innings
48, Lisa Fernandez; Lakewood St. Joseph 1, Cerritos Gahr 0; 1986; 29 innings
47; Kristen Sloubar; Van Nuys Montclair Prep 2, Sonta Monica Crossroads 1; May 8-9, 2005; 21 innings
43; Terry Carpenter; Huntington Beach Edison 0, Burbank Burroughs 0; 19xx; 24 innings
43; Jenny Schachtner; Flintridge Prep 2, Westright Tigers 1; June 27-29, 2005; 26 innings
42; Kristy Goodrich; Warren Lordstown OH 6, Bristol OH 2; 1998; 21 innings
40; Michelle Granger; Placentia Valencia 1, La Mirada 0; 1988; 25 innings
35; Lucy Cezarez; Chula Vista Bonita Vista 1, La Mesa Helix 0; 1976; 29 innings
As such, she set a new national record for strikeouts in a game under 20 innings, beating Jenny Stallard's previous record of 31 in 19 innings in 1978; she also set the new national record for strikeouts in a 14-inning game, breaking Michelle Granger's former record of 31 in 1985.



























