Garcia was redshirted her freshman year due to a knee injury she suffered in high school. As a redshirt freshmen, she earned Pac-12 Freshman of the Year and NFCA National Freshman of the Year along with all-conference honors and a Second-Team All-American selection.[7] Garcia led all Pac-12 pitchers in strikeouts and was tied for first in saves, third in wins, fourth in innings, fifth in opposing batting average (.203) and sixth in ERA, while she had 14 complete games and was a part of 23 shutouts, including five solo shutouts. In addition to pitching, she was one of the team's best hitters as tallied a .325 batting average, eight homers and 29 RBI and had 15 multiple-hit games and eight multi-RBI contests.[1] She made her collegiate debut on February 10, collecting two hits in a game against the South Dakota Coyotes, while also throwing a run-rule shutout with seven strikeouts over the San Diego State Aztecs.
Garcia led the Bruins to a No. 5 seed at the World Series with her 23–9 win–loss record. In her debut at the Women's College World Series, Garcia pitched all of UCLA's games and left with a 1–1 record, falling in the second round. In her second game against Washington Huskies she struck out seven batters in a 1–0 loss.
Sophomore year
During her sophomore year, Garcia posted a 29–4 record, with a 1.31 ERA. Garcia led all Pac-12 pitchers in wins, strikeouts and opposing batting average, was third in innings pitched and fifth in ERA and achieved a career best in hits and batting average. She struck out 42 batters in 23 innings in four games at the Women's College World Series, and was named to the All-WCWS Team. Following an outstanding season, Garcia was named Pac-12 Conference Player of the Year, USA Softball Collegiate Player of the Year, NFCA National Player of the Year, and the Honda Sports Award for softball.[1][8][9]
Junior year
During her junior year, Garcia posted a 29–1 record, with a 1.14 ERA and 286 strikeouts in 202 innings. Garcia led the Bruins to the NCAA title completing four of five victories pitched, throwing a shutout, a 10-inning win, batting .333 and leading with eight RBIs, including defeating the No. 1 Oklahoma Sooners back-to-back in the finale series.[10] Following her performance she was named the Women's College World Series Most Outstanding Player.[11] She ended the year on a nine game win streak that would continue upon her return in the 2021 season.
Garcia missed the first month of the 2021 season due to an injury. She then went on to win 16 consecutive decisions for a 25 game win streak dating back to the 2019 season. She finished the regular season with an undefeated 14–0 record, a nation-leading 0.60 ERA, two saves and 124 strikeouts in 94 innings. She also ranked third in the Pac-12 with a .504 on-base percentage and fourth with a .756 slugging percentage while launching a conference-high seven home runs in Pac-12 play. She finished the year with an 18–3 record, with seven shutouts, 183 strikeouts and 29 walks in 136+1⁄3 innings.[1]
Garcia ended the year with a return to the Women's College World Series for the fourth consecutive year, where UCLA was eliminated by Oklahoma. During the game she posted seven strikeouts, two hits, and drove in all the Bruins runs by hitting a home run in her final appearance. Following an outstanding season, she was named NFCA National Player of the Year, Pac-12 Player of the Year for the third consecutive year, D1Softball two-way player of the year, first-team all Pac-12, and a first-team All-American.[21] She also was named a finalist for the USA Softball Collegiate Player of the Year, and won the Senior CLASS Award, Honda Sports Award for softball, and named Honda-Broderick Cup winner, becoming the first athlete to win back-to-back honors outright.[22][23][24][25]
International career
Garcia saw limited playing time on the Team USA "Stand Beside Her" tour that was suspended due to the COVID-19 pandemic in March, 2020. She later returned in 2021 after her college eligibility was completed.
Garcia returned to UCLA for her final collegiate year before joining the United States women's national softball team prior to the rescheduled Olympics in July, 2021.[26] She represented Team USA at the 2020 Summer Olympics, where she made two appearances as a pinch-hitter in six games and won a silver medal.[27][28][29]