Chargers add depth at running back by signing Sony Michel

Miami Dolphins quarterback Skylar Thompson (19) hand off to running back Sony Michel (28) during NFL football training camp at Baptist Health Training Complex in Hard Rock Stadium on Thursday, Aug. 18, 2022 in Miami Gardens, Fla. (David Santiago/Miami Herald via AP)

Miami Dolphins running back Sony Michel (28) scores a touchdown during the first half of a NFL preseason football game against the Philadelphia Eagles, Saturday, Aug. 27, 2022, in Miami Gardens, Fla. (AP Photo/Lynne Sladky)