FILE - In this Nov. 12, 2017, file photo, Los Angeles Chargers fullback Derek Watt (34) runs after catching a pass during the second half of an NFL football game against the Jacksonville Jaguars in Jacksonville, Fla. Watt couldn't pass up the opportunity to play with his younger brother T.J. It's the main reason the fullback agreed to a three-year contract with the Pittsburgh Steelers. (AP Photo/Phelan M. Ebenhack, File)

FILE - In this Dec. 2, 2018, file photo, Pittsburgh Steelers outside linebacker T.J. Watt, right, and Los Angeles Chargers fullback Derek Watt pose after exchanging jerseys after an NFL football game in Pittsburgh. Derek Watt couldn't pass up the opportunity to play with his younger brother T.J. It's the main reason the fullback agreed to a three-year contract with the Pittsburgh Steelers.(AP Photo/Don Wright, File)