Sewald was placed on the 60-day injured list and won’t return from a shoulder strain until September. Montero and Finnegan will join the Tigers in Philadelphia on Friday. The Tigers still need to remove one player from the active roster to accommodate the new additions.

The Detroit Tigers acquired Kyle Finnegan from Washington for two prospects, a person familiar with the deal told The Associated Press just hours before Thursday's trade deadline

The Detroit Tigers made a splash ahead of Thursday's trade deadline, shoring up the bullpen in a deal with the Washington Nationals. The Tigers are finalizing a trade to acquire closer Kyle Finnegan from the Nationals, according to FanSided's Robert Murray.