Pete Alonso Bio
Peter Morgan Alonso, known across baseball as the “Polar Bear,” is an American professional baseball first baseman who currently plays for the Baltimore Orioles of Major League Baseball. Born on December 7, 1994, in Tampa, Florida, he rose to national fame as a member of the New York Mets before signing a long-term deal with the Orioles. He set a major league rookie record with 53 home runs in 2019, won the National League Rookie of the Year Award the same season, and went on to become the Mets’ all-time franchise leader in home runs. A five-time All-Star, Alonso is widely recognized as one of the most powerful first basemen of his generation.
Early Life and Background
Peter Morgan Alonso was born on December 7, 1994, in Tampa, Florida. He attended Jesuit High School in Tampa for his first two years before transferring to Henry B. Plant High School, where he finished his high school education. As a freshman, he played both lacrosse and football, but he eventually chose to focus entirely on baseball, lining up at third base for his high school team.
Alonso comes from a family with deep American roots and a powerful immigrant story. His paternal grandfather, Peter Conrad Alonso, was a Spanish refugee who fled Barcelona during the Spanish Civil War and entered the United States through Ellis Island. The grandfather settled in Queens, became a Brooklyn Dodgers fan, served in World War II, and later earned multiple degrees at New York University before moving to Long Island and starting a family. Alonso’s father, Peter Matthew Alonso, was eventually raised in Lancaster, Ohio, where he met and married Alonso’s mother, Michelle Lynn Morgan, a former Ohio Wesleyan University softball student-athlete.
Path to Baseball
After high school, Alonso enrolled at the University of Florida, where he played college baseball for the Florida Gators as a first baseman. He earned All-Southeastern Conference honors during his freshman year and competed for Florida in both the 2015 and 2016 College World Series. In the summers of 2014 and 2015, he sharpened his game in two of the country’s top collegiate leagues, suiting up for the Madison Mallards of the Northwoods League and the Bourne Braves of the Cape Cod Baseball League, where he was inducted into the Mallards’ Hall of Fame in 2024.
In 2016, his junior season, Alonso delivered one of the most productive years in college baseball, batting .374/.469/.659 with 14 home runs and 60 runs batted in across 58 games. That production convinced the New York Mets to select him in the second round of the 2016 MLB Draft with the 64th overall pick. He signed for a $909,200 bonus and began a steady climb through the Mets’ minor league system, where his power hitting quickly made him one of the organization’s most exciting young prospects.
Pete Alonso Career
Early Career (2016–2018)
Alonso made his professional debut in 2016 with the Brooklyn Cyclones of the New York–Penn League, batting .322 with five home runs in 30 games and earning an All-Star selection. He opened 2017 with the St. Lucie Mets of the Florida State League, hit 16 home runs in 82 games, and earned a midseason promotion to the Binghamton Rumble Ponies of the Eastern League. Heading into 2018, MLB.com ranked him as New York’s fourth-best prospect, and he rose from Double-A to Triple-A Las Vegas, combining to slash .285/.395/.579 with 36 home runs and 119 runs batted in.
That breakout 2018 campaign earned Alonso a spot in the All-Star Futures Game and the Joe Bauman Home Run Award. He also produced one of the most memorable moments in the history of Cashman Field, hitting a walk-off home run as the final batter ever to play at the Las Vegas ballpark. The performance cemented his status as a future cornerstone of the Mets lineup.
MLB Debut and Rookie Sensation (2019)
Alonso made the Mets’ Opening Day roster in 2019 and debuted on March 28, recording his first major league hit against the Washington Nationals. He hit his first home run on April 1 off Miami’s Drew Steckenrider and became the first player since 1900 to record 11 extra-base hits in his first 10 career games. He earned National League Rookie of the Month honors for both April and June, setting the National League rookie record for home runs before the All-Star break with 27.
On July 8, 2019, Alonso won the MLB Home Run Derby, beating Vladimir Guerrero Jr. 23–22 in the final round. He finished the season with 53 home runs, breaking Aaron Judge’s rookie record, and led all of Major League Baseball in long balls. In November, he was a near-unanimous choice for the National League Rookie of the Year Award, then earned a spot on the inaugural All-MLB First Team in December.
New York Mets Prime Years (2020–2023)
After a 2020 season shortened by the COVID-19 pandemic, Alonso rebounded in 2021 to hit 37 home runs and reach 100 career homers in just 347 games, the second-fastest in MLB history behind Ryan Howard. He won his second Home Run Derby title in July 2021, joining an elite group of back-to-back champions. In 2022, he set a new Mets single-season record with 131 runs batted in, led the National League in RBI, and smashed 40 home runs for the first time as a Met.
In 2023, Alonso hit 46 home runs, joined a short list of players with three 40-homer seasons within their first five years, and was named an All-Star for the third time. He was also part of the United States national baseball team that competed in the 2023 World Baseball Classic, hitting an RBI single against Cuba in the semifinals. Throughout this stretch, he steadily climbed the Mets’ all-time home run leaderboard.
New York Mets (2024–2025)
Alonso played all 162 games in 2024, the second Met in history to appear in every game of a season, and hit 34 home runs. In Game 3 of the National League Wild Card Series against the Milwaukee Brewers, he launched a go-ahead, three-run homer in the ninth inning to lead the Mets to a 4–2 win, becoming the first player in MLB history to hit a go-ahead homer in the ninth inning or later of a winner-take-all postseason game. After declining a qualifying offer, he returned to the Mets on a two-year, $54 million contract in February 2025.
During 2025, Alonso moved up the Mets’ all-time leaderboard for both home runs and runs batted in, passed David Wright for second place in franchise home runs, and broke Darryl Strawberry’s mark to become the Mets’ all-time home run leader. He played all 162 games, set a career high with 41 doubles, hit 38 home runs with 126 runs batted in, made his fifth All-Star team, and earned his first Silver Slugger Award. Following the season, he opted out of his contract and became a free agent.
Baltimore Orioles Era (2025–Present)
On December 11, 2025, after three months of negotiations, Alonso signed a five-year, $155 million contract with the Baltimore Orioles, ending his seven-year run in New York. He joined a young Orioles lineup that had been seeking a power-hitting first baseman to anchor its middle of the order. He chose jersey number 25 with the Orioles, a switch tied to the birth of his son in 2025.
Through his early time in Baltimore, Alonso has continued to produce at a high level, adding to a career total that includes 282 home runs, 764 runs batted in, and 1,025 hits in the major leagues. His veteran presence has complemented Baltimore’s developing core, and he remains a central figure in the club’s push back toward the postseason.
Driving Style and Strengths
Alonso is a right-handed power hitter whose calling card is his elite bat speed and upper-body strength, allowing him to drive the ball to all fields. He consistently ranks near the top of the league in exit velocity and hard-hit rate, and his patient approach at the plate has produced strong on-base numbers throughout his career. Defensively, he has developed into a reliable first baseman with soft hands and a strong arm across the diamond.
Notable Events and Milestones
Among his signature moments, Alonso set the MLB rookie home run record with 53 in 2019, became the Mets’ all-time home run leader in 2025, and delivered one of the most dramatic postseason homers in league history against the Brewers. He is a two-time Home Run Derby champion and a five-time All-Star, achievements that place him among the most accomplished first basemen of his era.
Pete Alonso Career Wins
Alonso’s career has been defined by a steady accumulation of milestones, awards, and signature moments. From his record-breaking rookie season to his All-Star appearances, Home Run Derby titles, and Silver Slugger honors, he has built one of the most decorated résumés of any active first baseman.
Major League Highlights
Alonso is a five-time MLB All-Star (2019, 2022, 2023, 2024, 2025), a two-time Home Run Derby champion (2019, 2021), and the 2019 National League Rookie of the Year. He led the National League in runs batted in during 2022 and won his first Silver Slugger Award in 2025. He also led the Mets to several deep postseason runs, including the 2024 National League Championship Series.
Other Wins and Performances
Before reaching the majors, Alonso starred at the University of Florida and won the Joe Bauman Home Run Award in 2018. He was inducted into the Madison Mallards Hall of Fame in 2024, recognizing his standout summer in the Northwoods League. He also represented the United States at the 2023 World Baseball Classic, where he contributed key hits during the team’s run to the semifinals.
Pete Alonso Family
Family Background and Racing Lineage
Alonso’s family history is rooted in both American tradition and Spanish heritage. His paternal grandfather, Peter Conrad Alonso, escaped the Spanish Civil War and built a new life in New York after arriving through Ellis Island. His father, Peter Matthew Alonso, eventually settled in Ohio, where he met Alonso’s mother, Michelle Lynn Morgan, a former college softball player at Ohio Wesleyan University. The family later relocated to Florida, where Alonso grew up and developed his love of baseball.
Personal Life
Alonso met his wife, Haley Walsh, in the summer of 2015 while playing collegiate summer baseball on Cape Cod. The two carried on a long-distance relationship while Alonso attended the University of Florida and Walsh studied at Michigan State University. They became engaged in November 2018 and were married on November 12, 2021, at Sacred Heart Catholic Church in downtown Tampa. In October 2025, the couple welcomed their first child, a son. In 2020, Alonso and his wife established The Alonso Foundation, a charitable organization supporting youth, veterans, and animal causes.
2025 Season Performance
Alonso’s 2025 season with the Mets was one of the most complete of his career, beginning with a red-hot April that earned him National League Player of the Month honors for the first time. He set or matched several franchise milestones, including passing Howard Johnson on the Mets’ all-time RBI list and surpassing David Wright for second place in franchise home runs. On August 12, he broke Darryl Strawberry’s long-standing record to become the Mets’ all-time home run leader, a moment that cemented his legacy in New York.
He played all 162 games for the second consecutive season, hit 38 home runs, drove in 126 runs, and set a career high with 41 doubles. He was selected to his fifth All-Star Game, homered in the Midsummer Classic, and was named a Silver Slugger for the first time. After the season, Alonso opted out of his contract, making him one of the most sought-after free agents on the market.
His exit from Queens ended a defining chapter of his career, but the season also served as a springboard into a new opportunity. By signing a five-year, $155 million deal with the Baltimore Orioles in December 2025, Alonso positioned himself as a cornerstone of a young, contending roster. Heading into the 2026 campaign, he is expected to anchor the middle of the Orioles lineup and provide veteran leadership to a club looking to return to championship contention.
