#32, Infield, R/R

Sierra Romero

University of Michigan '16

Hometown: Murrieta, California

Holds NCAA Records in Career Runs, Grand Slams

Sierra Romero is a 5-foot-5 professional softball middle infielder from Murrieta, California. She was acquired in the 12th Round of the 2025 Inaugural Draft following a collegiate career at Michigan.

Personal Life

Hobbies: Enjoys cooking, golfing, working out, playing video games, spending time with her dogs and going to the movies. Would be a professional tennis player if she were not playing softball.

Background: Member of the Athletes Unlimited Softball League's Player Executive Committee and inducted into the Michigan Sports Hall of Fame on September 14, 2023. Has two dogs named Luna and Athens. Models her game after Natasha Watley, Lisa Fernandez and Derek Jeter, and counts former Michigan head coach Carol Hutchins among her softball idols. Lists her father, Michael, as a person who has made a difference in her life. Has worn No. 32 since high school and owns a softball development app called "The 32 Approach." Also played basketball and tennis as a child.

Education: Majored in general studies at Michigan.

Family: Her sister, Sydney, won two NCAA titles as a player at Oklahoma and two more as a graduate assistant with the Sooners. Her younger brother, Michael, was drafted by the Boston Red Sox in the first round (No. 24 overall) of the 2022 MLB Draft, and her younger sister, Sophia, is a redshirt sophomore outfielder at Boise State.

Professional Experience

Athletes Unlimited Pro Softball, AUX & AUSL (2022–2025)

2026 AUSL Regular Season (Texas Volts): Started 21 of 23 games with Texas during her final professional season, batting .167 with three home runs and eight runs batted in. She hit a two-run home run at Carolina on June 15 and a three-run homer against Chicago on June 24.

2025 AUSL All-Star Cup: Earned 870 points, batting .290 with two home runs and seven RBIs.

2025 AUSL Regular Season: Started 23 games for the Volts, authoring a .288 batting average with one home run and five doubles.

2024 Championship Season: Totaled 1,070 points, posting a .250 average with two home runs.

2023 Championship Season: Finished 13th with 1,430 points, hitting .260 with four doubles.

2022 AUX Season: Finished 12th with 1,134 points. Hit the first home run in AUX Softball history on June 13. Hit .409 over 11 games.

Other Professional & International Experience (2013–2018)

NPF: No. 2 overall selection by the USSSA Pride in 2016. Hit .346 with 19 home runs over a three-year career.

International: Competed for Team USA at the 2013 ISF Junior Women’s World Championship (hit .500) and has competed for Team Mexico.

College Experience: Michigan (2013–2016)

Romero started 252-of-253 games at Michigan.

Career Statistics: Started 252 of 253 games from 2013-16, hitting .441 with 82 home runs, 305 runs batted in, 302 hits (44 doubles, six triples) and 302 runs scored.

Michigan (2013–2016): Became the first player in NCAA history to register 300 career runs, hits and runs batted in, and holds NCAA records for career runs scored (302) and grand slams (11). She set the Michigan record with 23 home runs as a freshman, hit a school-record four grand slams as a sophomore, and was one of 25 hitters named to the D1 Softball All-Quarter Century Team.

Awards & Honors

National Honors: 2016 USA Softball Collegiate Player of the Year. Four-time All-America selection (three First-Team awards).

Conference Honors: Three-time Big Ten Player of the Year.

YEAR	G	GS	PA	AB	AVG	OBP	SLG%	OPS	R	H	2B	3B	HR	RBI	BB	HP	SO	LOB	TB	SF	SH	SB	CS
2026 Volts	21	20	56	48	.167	.268	.375	.643	5	8	1	-	3	8	7	-	17	13	18	1	-	-	-
2025 All-Star Cup	10	10	35	31	.290	.333	.581	.914	6	9	3	-	2	7	2	-	6	-	18	-	2	-	-
2025 Volts	23	23	82	73	.288	.341	.397	.738	8	21	5	-	1	7	7	-	11	15	29	2	-	-	-
2024 Championship*	15	5	53	48	.250	.308	.417	.725	3	12	2	-	2	6	4	-	8	-	20	-	1	1	-
2022 AUX Softball	12	-	47	44	.409	.447	.523	.970	10	18	2	-	1	10	3	-	6	-	23	-	-	-	-
2023 Championship*	15	7	55	50	.260	.327	.440	.767	2	13	4	1	1	7	5	-	8	-	22	-	-	-	-
2022 Championship*	15	-	48	42	.238	.333	.357	.690	5	10	2	-	1	3	6	-	10	-	15	-	-	-	-
Career Totals	111	65	376	336	.271	.335	.432	.767	39	91	19	1	11	48	34	-	66	482	145	3	3	1	-

*The AUSL All-Star Cup was known as the Championship season through 2024.

Splits

DATE	HOME TEAM	AWAY TEAM	PA	AB	AVG	OBP	SLG%	OPS	R	H	2B	3B	HR	RBI	BB	HP	SO	LOB	TB	SF	SH	SB	CS
7/18/2026	Cascade	Volts	2	2	.500	.500	.500	1.000	-	1	-	-	-	-	-	-	1	-	1	-	-	-	-
7/17/2026	Cascade	Volts	3	2	-	.333	-	.333	1	-	-	-	-	-	1	-	2	-	-	-	-	-	-
7/15/2026	Volts	Spark	3	3	.333	.333	.667	1.000	-	1	1	-	-	1	-	-	1	-	2	-	-	-	-
7/14/2026	Volts	Spark	3	3	.333	.333	.333	.666	-	1	-	-	-	-	-	-	1	-	1	-	-	-	-
7/13/2026	Volts	Blaze	2	2	.500	.500	2.000	2.500	1	1	-	-	1	1	-	-	1	1	4	-	-	-	-
7/11/2026	Volts	Blaze	2	-	-	1.000	-	1.000	-	-	-	-	-	-	2	-	-	-	-	-	-	-	-
7/10/2026	Volts	Blaze	3	2	-	.333	-	.333	-	-	-	-	-	-	1	-	-	-	-	-	-	-	-
7/5/2026	Bandits	Volts	2	2	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
7/4/2026	Bandits	Volts	2	2	-	-	-	-	-	-	-	-	-	-	-	-	1	-	-	-	-	-	-
7/1/2026	Talons	Volts	3	3	.333	.333	.333	.666	-	1	-	-	-	-	-	-	-	-	1	-	-	-	-
6/30/2026	Talons	Volts	3	2	-	.333	-	.333	-	-	-	-	-	-	1	-	1	-	-	-	-	-	-
6/28/2026	Volts	Cascade	3	3	-	-	-	-	-	-	-	-	-	-	-	-	2	3	-	-	-	-	-
6/26/2026	Volts	Cascade	2	2	-	-	-	-	-	-	-	-	-	-	-	-	1	1	-	-	-	-	-
6/24/2026	Volts	Bandits	3	3	.333	.333	1.333	1.666	1	1	-	-	1	3	-	-	-	-	4	-	-	-	-
6/23/2026	Volts	Bandits	3	2	-	.333	-	.333	-	-	-	-	-	-	1	-	1	-	-	-	-	-	-
6/20/2026	Volts	Talons	3	3	.333	.333	.333	.666	-	1	-	-	-	-	-	-	-	3	1	-	-	-	-
6/18/2026	Volts	Talons	2	2	-	-	-	-	-	-	-	-	-	-	-	-	2	2	-	-	-	-	-
6/15/2026	Blaze	Volts	3	3	.333	.333	1.333	1.666	1	1	-	-	1	2	-	-	-	1	4	-	-	-	-
6/11/2026	Spark	Volts	3	2	-	-	-	-	-	-	-	-	-	1	-	-	1	-	-	1	-	-	-
6/10/2026	Spark	Volts	4	4	-	-	-	-	-	-	-	-	-	-	-	-	1	2	-	-	-	-	-
6/9/2026	Spark	Volts	2	1	-	.500	-	.500	1	-	-	-	-	-	1	-	1	-	-	-	-	-	-

*The AUSL All-Star Cup was known as the Championship season through 2024.

Highlights

Sierra Romero Brings Fresh Athlete Perspective to the Athletes Unlimited Board of Directors

Sierra Romero has seen many phases of professional women’s sports throughout her nine-year career. She’s witnessed leagues’ failures, triumphs, setbacks, and breakthroughs, especially in her sport, as she floated somewhere between driver and passenger in what was previously an unstable softball landscape. When she began playing in the early iterations of Athletes Unlimited Pro Softball, […]