#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

Background: Sister, Sydney, won NCAA titles at Oklahoma. Brother, Michael, was a first-round draft pick of the Boston Red Sox. Inducted into the Michigan Sports Hall of Fame in 2023.

Trivia: Owns a softball development app called “The 32 Approach”.

Professional Experience

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

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: Authored a .441 career batting average with 82 home runs and 305 RBIs. First player in NCAA history to register 300 runs, 300 hits, and 300 RBIs. Holds NCAA records in runs scored (302) and grand slams (11).

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 AUSL	6	6	17	15	.133	.176	.333	.509	2	2	-	-	1	3	1	-	5	81	5	1	-	-	-
2025 All-Star Cup	10	10	35	31	.290	.333	.581	.914	6	9	3	-	2	7	2	-	6	-	18	-	2	-	-
2025 AUSL	23	23	82	73	.288	.341	.397	.738	8	21	5	-	1	7	7	-	11	-	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	96	51	337	303	.281	.338	.436	.774	36	85	18	1	9	43	28	-	54	672	132	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
6/20/2026	Volts	Talons	3	3	.333	.333	.333	.666	-	1	-	-	-	-	-	-	-	7	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	-	-	-	7	4	-	-	-	-
6/11/2026	Spark	Volts	3	2	-	-	-	-	-	-	-	-	-	1	-	-	1	7	-	1	-	-	-
6/10/2026	Spark	Volts	4	4	-	-	-	-	-	-	-	-	-	-	-	-	1	5	-	-	-	-	-
6/9/2026	Spark	Volts	2	1	-	.500	-	.500	1	-	-	-	-	-	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, […]