The 31-year-old signed a minor-league deal with the Red Sox in January 2023 ahead of spring training. He made a legitimate case to make the Opening Day roster, but Connor Wong beat out Alfaro and he began the year in Triple-A Worcester. After hitting .320 with six home runs in 43 games, Alfaro opted out of his contract June 1.

Blake Sabol played 121 games in the previous two seasons, where he has accumulated 83 hits, bringing him to a .243 batting average.