Both Buchanan and Lee are paperwork moves and nothing more.
The Phillies don't need a fifth starter until July 22, so optioning Buchanan allows the club to carry an extra bat into the break and through the first series after the Midsummer Classic in Atlanta. It also allows Buchanan to keeping pitching. Lee, who has been on the DL since May 19 with a strained left elbow, can be activated as early as July 18.
Lee, who is making a third rehab start Monday with Class A Clearwater, is expected to pitch in Atlanta.
The Phillies signed Sizemore because their outfield production has been among the worst in baseball this season. Their overall .679 OPS in the outfield ranked 23rd in baseball entering Thursday. Their .566 OPS in left field is last, and their .654 OPS in center field is 21st.
It is unclear how much of a boost Sizemore can actually provide. He hit just .215 with 10 doubles, two triples, two home runs, 15 RBIs and a .612 OPS in 52 games before the Red Sox released him last month. He had been one of the better outfielders in baseball with the Indians from 2004-09 before seven surgeries for a variety of injuries limited him to 104 games 2010-11 and kept him out of baseball in 2012-13.
Sizemore hit .289 with one double, one home run, two RBIs and a .738 OPS in 50 plate appearances over 10 games with the IronPigs.
Todd Zolecki is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.