Oregon softball head coachbolstered her coaching staff on Wednesday with the addition of former four-time all-American and 2016 national player of the year Sierra Romero as the Ducks' volunteer assistant coach.Romero, the first four-time all-American in Michigan program history from 2013 to 2016, joins the Ducks after dominating for the National Pro Fastpitch's USSSA Pride over the last three summers."I am proud to announce Sierra as our volunteer assistant coach," said Lombardi. "She brings great knowledge of the game, high level experience and has played on the sport's biggest stages. Sierra has an impeccable work ethic, excellent leadership skills and a competitive edge that creates a positive influence for those around her. Sierra is a great addition to our program and I am looking forward to watching her growth as a coach.""I am very excited for this opportunity to bring my personal experiences to the game from a different perspective," said Romero. "I look forward to learning from such an amazing coaching staff and working with a great group of talented young women."Romero put together a phenomenal four-year career at Michigan, becoming the first player in NCAA history to record 300 runs, 300 hits and 300 RBIs. She is the NCAA record-holder in career runs (302) and grand slams (11), and she ranks fourth all-time in career RBIs (305) and slugging percentage (.882), and eighth in home runs (82) and walks (225).As a senior in 2016, Romero led the Wolverines with a .451 batting average, 76 runs scored, 73 hits, 19 home runs and 79 RBIs en route to being named the USA Softball collegiate player of the year and the NFCA Division I player of the year. She was also the Big Ten player of the year as well as a consensus first-team all-American and All-Big Ten first-team selection at second base. Romero's stellar senior season led to her being selected No. 2 overall by the Pride in the 2016 NPF Draft.Romero was the espnW softball player of the year as a junior and consensus first-team all-American as a junior in 2015, blasting 22 homers with 83 RBIs and 85 runs scored while hitting .449. Her RBI and runs totals both set Michigan single-season records, and she broke the program career RBI record and tied the home run record with a solo homer against California in NCAA Regional play. Romero led the Wolverines to the NCAA championship series against Florida, where she drove in Michigan's lone run of the series.The Big Ten player of the year and a finalist for USA player of the year as a sophomore in 2014, Romero earned her second all-America honor, and first on the first team, after setting the Michigan single-season record with a .491 batting average. She also broke the Michigan single-season record with four grand slams.Romero burst onto the scene as a freshman in 2013, blasting a program record 23 home runs while hitting .379 with 71 RBIs to lead Michigan in all three Triple Crown categories. She was the Big Ten player of the year and freshman of the year and an all-Big Ten first-team selection, and her 12 home runs in conference play were also a new Big Ten single-season record.After finishing her stellar collegiate career, Romero hit .339 with five homers for the USSSA Pride in 2016 before hitting .302 with seven blasts and 33 RBIs in 2017. In 2018, she has hit .407 with seven home runs and 25 RBIs in 31 games.Romero graduated from Michigan in 2016 with a degree in general studies. She has two sisters and one brother, and her younger sister, Sydney, played under Lombardi for three years at Oklahoma and will be a junior for the Sooners in 2018.