Furman was traded from the Giants to the Nationals in exchange for minor-league left-handed pitcher Tony Neubeck on Sunday, Jeff Passan of ESPN.com reports.
Lovelady was designated for assignment by the Nationals on Sunday, Kyle Williams of TheBanner.com reports.
Jones did not factor into the decision in Sunday's 4-2 win over the Tigers, allowing one hit and no walks while striking out five over four scoreless innings.
Griffin went 2-for-4 with a home run and two RBI in Sunday's 4-2 win over the Tigers.
Montgomery earned the save in Sunday's 4-2 win over the Tigers, striking out two in a perfect ninth inning.
Chaparro went 3-for-4 with a pair of solo home runs in Sunday's 6-4 win over the Mets.
Tolman earned the save in Sunday's 6-4 win over the Mets, allowing a walk and one hit while striking out two over 1.1 innings.
Lowe is not in the lineup for Sunday's game versus the Tigers.
The Pirates optioned Sisk to Triple-A Indianapolis on Sunday, Kevin Gorman of TribLive.com reports.
Cruz (knee) is absent from the lineup for Sunday's game versus the Tigers.
