Red Sox's Nava thriving on rehab assignment, no timetable for return

There remains no timetable for Red Sox outfielder Daniel Nava's return from a rehab assignment, manager John Farrell said Thursday.

Nava, who has been out since late May due to a thumb injury, homered and drove in four runs for Triple-A Pawtucket on Thursday. He has seven RBI in his last two games and has multiple hits in three straight games.

He is batting .321 (9 for 28) with one double, one home run, eight RBI, four runs, four walks, eight strikeouts and two stolen bases through eight games on his rehab assignment.