As for Ephraim, he spent the last two seasons with the Philadelphia Eagles after signing as an undrafted rookie free agent in 2003. He played in 30 games for the Eagles, with two starts.
In other news:
-- Dolphins offensive lineman Jason Thomas underwent arthroscopic knee surgery on Tuesday to debride a chondral lesion in his right knee. Thomas will be evaluated on a week-to-week basis.
-- Dolphins guard Eric Wilson returned to practice on Tuesday after missing three days to attend to personal issues.
-- To make room on the roster for Ephraim, the Dolphins waived linebacker Derek Curry, who had been signed as an undrafted free agent on April 29.