Joseph went 2-for-4 with a solo home run and a double in Monday's loss to the Tigers.
Joseph got the start at first base against righty Mike Pelfrey while Ryan Howard was shifted to DH. Joseph is 6-for-20 with two home runs since he was promoted from Triple-A. The Phillies remain committed to a platoon at first base, but Joseph could force them to reassess if he keeps hitting and Howard keeps struggling.