It appears the Red Sox experimentation with a six-man pitching rotation is over after the team sent 26-year-old lefthander Franklin Morales back to the bullpen before Tuesday night’s game against the White Sox.

Morales made five starts since June 17, with the Red Sox going 3-2 in those games, and pitched 26-1/3 innings allowing 10 earned runs while striking out 31 batters and giving up eight walks.