The Red Sox promoted Campbell from Double-A Portland to Triple-A Worcester on Sunday, Chris Cotillo of MassLive.com reports.
Campbell will get his second promotion of the season after opening the campaign at High-A Greenville. The 22-year-old infielder was impressive during his time at Portland, maintaining a 197 wRC+ and .470 wOBA across 251 plate appearances. He's combined to hit 16 home runs and steal 20 bases over 95 games between Portland and Greenville this season.