Watch tight end Elijah Arroyo, linebacker Francisco Mauigoa and safety Mishael Powell in interviews after practice on Tuesday. No. 7 Miami (4-0, 0-0 ACC) is coming off a 50-15 win at USF and hosts Virginia Tech (2-2, 0-0) on Friday (7:30 p.m., ESPN). Christopher Stock has covered the Miami Hurricanes…