Campbell was selected by the
Boston Red Sox in the fourth round of the
2023 Major League Baseball draft. Campbell debuted as a professional in early August 2023 with the rookie-level
Florida Complex League Red Sox. He was promoted to the
High-A Greenville Drive later in August. In 26 games, he hit .309 with seven extra base hits, 10 walks, and 17 strikeouts. He started 2024 with Greenville before being promoted to the
Portland Sea Dogs. He finished the season with the
Worcester Red Sox in
Triple-A, posting a combined .330/.439/.558 slash line across the three teams. He was named
Minor League Player of the Year by
Baseball America and
USA Today. Before the 2025 season, Campbell was named a top 10 prospect by
MLB.com,
Baseball America,
Baseball Prospectus,
FanGraphs, and
the Athletic. On March 27, 2025, the Red Sox selected Campbell's contract after he made the team's
Opening Day roster. On April 2, Campbell and the Red Sox agreed to an eight-year contract extension worth $60 million. The deal also includes club options for 2033 and 2034. Campbell reached base in his first 17 games, the second largest streak to start a career in Red Sox history. By the end of April, Campbell was slashing .301/.407/.495 for an OPS of .902 with 4 HR and 12 RBI. Campbell was rewarded with the
AL Rookie of the Month Award for April. However, after his successful April, Campbell struggled. He slashed .154/.249/.222, and struggled defensively in May and June. On June 19, with his slumping performance and return of
Wilyer Abreu, the Red Sox announced that they were optioning Campbell to Triple-A. Campbell was optioned to Triple-A Worcester to begin the 2026 season. == Personal life ==