Ketel Marte Bio
Ketel Ricardo Marte Valdez is a Dominican professional baseball second baseman for the Arizona Diamondbacks of Major League Baseball (MLB). He made his MLB debut with the Seattle Mariners in 2015 and has since become a key player for the Diamondbacks. Notably, he has been selected as an All-Star multiple times and earned the NLCS MVP in 2023. Known for his dynamic gameplay and resilience, Ketel Marte continues to make a significant impact in MLB.
Early Life and Background
Ketel Ricardo Marte Valdez was born on October 12, 1993, in the Dominican Republic. He grew up in a baseball-rich culture that has produced many of the sport’s top players. From an early age, Marte was drawn to the game, and the Dominican baseball tradition played a major role in shaping his path toward a professional career.
Marte is the nephew of former MLB infielder Wilson Valdez, giving the young player a direct connection to professional baseball through his family. He later married a cousin of Vladimir Guerrero Jr., further tying him to a prominent baseball family. Marte is known by the nickname “Pike” (pronounced PEE-keh), a Dominican term that refers to someone with style and confidence. He and his wife have five children.
In 2017, Ketel Marte’s mother, Elpidia Valdez, died in a car accident in the Dominican Republic. The Arizona Diamondbacks placed Marte on the bereavement list following her death, and the loss remained a deeply personal moment in his life and career.
Path to Baseball
Ketel Marte signed with the Seattle Mariners as an international free agent on August 13, 2010, receiving a $100,000 signing bonus. He made his professional debut in 2011 with the Dominican Summer League Mariners, beginning his climb through Seattle’s minor league system. Over the next several seasons, he moved through the Everett AquaSox, Clinton LumberKings, High Desert Mavericks, Jackson Generals, and Tacoma Rainiers, steadily developing his skills as a middle infielder.
Marte batted .295 with a .687 on-base plus slugging percentage in 2013, and he finished the 2014 season hitting .304 with a .746 OPS and four home runs. On November 20, 2014, the Mariners added him to their 40-man roster, signaling that his path to the major leagues was close. The Mariners promoted Marte to the major leagues on July 31, 2015, and he reached the big leagues at the age of 21.
Ketel Marte Career
Early Career (2015–2016)
Ketel Marte made his MLB debut with the Seattle Mariners in 2015, appearing as a young middle infielder with promising bat control. Going into the 2016 season, Seattle named Marte the team’s starting shortstop following the trade of Brad Miller, giving him a full opportunity to anchor the position.
However, Marte struggled in 2016, batting .259 with a .287 on-base percentage and striking out 84 times in 119 games. He missed significant time due to a left thumb injury and mononucleosis, which led to three separate stints on the disabled list. The Mariners attempted to trade Marte for the Cincinnati Reds’ Zack Cozart during the season, signaling a potential change in direction for the young infielder.
Seattle to Arizona Transition (2016–2017)
On November 23, 2016, the Mariners traded Marte and Taijuan Walker to the Arizona Diamondbacks in exchange for Jean Segura, Mitch Haniger, and Zac Curtis. Marte began the 2017 season with the Reno Aces of the Pacific Coast League before the Diamondbacks promoted him to the majors on June 28. In the National League Wild Card Game, he delivered two triples in an 11–8 win over the Colorado Rockies, then homered in Game 1 of the NL Division Series and batted .333 as the Los Angeles Dodgers swept Arizona.
Following the 2017 season, the Diamondbacks moved Marte from shortstop to second base ahead of 2018 to make room for Nick Ahmed at shortstop. In 2018, he led all of MLB in triples with 12 while batting .260 with 14 home runs in his first full season in Phoenix, establishing himself as a versatile and dynamic presence in the Arizona lineup.
All-Star Breakout (2019)
Batting .316 with 20 home runs and 51 RBIs in late June 2019, Ketel Marte was named the starting second baseman for the MLB All-Star Game. He finished the season batting .329 with 32 home runs and placed fourth in National League MVP voting, while also playing more games in center field than at second base. The 2019 campaign marked his arrival as one of the most productive hitters in the National League.
2023 Postseason Run and NLCS MVP
Marte rebounded in 2023, batting .276 with 25 home runs and a career-high 71 walks. In Game 3 of the 2023 NLCS, he delivered a walk-off single for his third hit of the night as the Diamondbacks won 2–1. In Game 7, Marte extended his postseason hitting streak to 16 games, the longest hitting streak to start a postseason career in MLB history. He finished the series batting .387 and was awarded the NLCS MVP Award as Arizona reached its first pennant since 2001.
2024 Season and Awards
Batting .292 with 19 home runs and 57 RBI at the 2024 All-Star Break, Ketel Marte was named the starting second baseman for the All-Star Game. After a left ankle sprain sidelined him briefly, he returned and ended the season with a .292 average, a career-high 36 home runs, and 95 RBI. Marte won his first Silver Slugger Award, finished third in NL MVP voting, and was named to the All-MLB First Team. On March 29, 2022, he had signed a five-year, $76 million contract extension with the Diamondbacks that covered this period of his prime.
Arizona Diamondbacks Era (2017–Present)
On April 2, 2025, the Diamondbacks signed Marte to a six-year contract extension worth a guaranteed $116.5 million, locking in the franchise’s longtime second baseman through 2031. Three days later, he went on the 10-day injured list with a left hamstring strain and returned on May 2. In June 2025, Marte moved into third place on the all-time career RBIs list as a Diamondback with 481, surpassing Steve Finley’s 479 with a two-run homer, trailing only Luis Gonzalez and Paul Goldschmidt. In July, he was voted to start his third All-Star Game, reinforcing his status as a cornerstone of the Arizona roster.
Notable Events and Milestones
Marte set the MLB record for the longest postseason hit streak to start a career, extending his run to 18 games in Game 2 of the 2023 World Series and ultimately reaching 20 games before the streak ended in Game 5, passing Manny Ramirez, Derek Jeter, and Hank Bauer, who had shared the previous mark of 17. In June 2025, a fan at Rate Field in Chicago heckled Marte regarding his mother, leading him to break down in tears; the Chicago White Sox and MLB announced the fan was banned from attending games indefinitely. The night of the 2025 All-Star Game, Marte’s home in Scottsdale, Arizona was robbed, and he reported losing $400,000 worth of items. He later apologized after missing three games following the break to travel to the Dominican Republic.
Ketel Marte Career Wins
While “wins” in baseball are a team statistic, Ketel Marte’s career is defined by his standout individual achievements. He has been selected as a 3-time All-Star (2019, 2024, 2025), a 2-time All-MLB First Team selection (2024, 2025), a 2-time Silver Slugger Award winner (2024, 2025), and the 2023 NLCS MVP. He also led all of MLB in triples in 2018 with 12.
Major League Highlights
Marte’s most memorable win came in Game 3 of the 2023 NLCS, when his walk-off single capped a 2–1 victory and helped push Arizona toward the World Series. He was also a key contributor in the 2017 NL Wild Card Game win over the Colorado Rockies, collecting two triples in an 11–8 victory.
Other Performances
Beyond the postseason, Marte’s 2018 triples crown, his 2019 All-Star selection, and his 2024 Silver Slugger Award stand as the most notable individual accomplishments of his major league career.
Ketel Marte Family
Family Background and Racing Lineage
Ketel Marte comes from a baseball family rooted in the Dominican Republic. He is the nephew of former MLB infielder Wilson Valdez, who played in the majors from 2009 to 2012. Marte also married a cousin of Vladimir Guerrero Jr., linking him to one of the most prominent baseball families in the game.
Personal Life
Marte is married and has five children. His mother, Elpidia Valdez, died in a car accident in the Dominican Republic in 2017, a loss that deeply affected him and led the Diamondbacks to place him on the bereavement list. Known by the nickname “Pike,” Marte continues to be recognized for his confidence and presence both on and off the field.
2025 Season Performance
The 2025 season represented a new chapter for Ketel Marte and the Arizona Diamondbacks. Following a six-year, $116.5 million contract extension signed on April 2, Marte dealt with a left hamstring strain that sent him to the 10-day injured list just three days later. He returned on May 2 and quickly moved up the franchise’s all-time RBI list, surpassing Steve Finley with his 481st RBI as a Diamondback in early June.
Marte was voted as a starter for the 2025 All-Star Game, his third career selection, capping a strong first half. The All-Star break, however, brought personal challenges, including a robbery at his Scottsdale home and a trip to the Dominican Republic that caused him to miss three games and drew public criticism from teammates, prompting an apology.
Marte finished the 2025 season batting .283 with 28 home runs in 126 games, his fewest since 2021. For the second consecutive year, the Diamondbacks were eliminated from the postseason in the final series of the season, leaving Marte and the organization focused on building momentum for the years ahead under his long-term contract.