This is usually a bad thing for defenses when safeties rack up tackles.  But the Dolphins defense has been on the field a long time in games because the offense has been playing bad.  FS Reynaldo Hill has 37 tackles this year and SS Tavares Tillman had 36 tackles.  These guys are solid players, but they don’t make big plays, which is what the defense needs to do with the offense not playing well.