Astros to place McCann on DL; Smith activated

McCann's 2-run homer Brian McCann is heading to the 10-day disabled list with a right knee injury, MLB.com has learned. Additionally, right-hander Joe Smith (right elbow soreness) was activated from the DL, and catcher Tim Federowicz was added back to the 40-man roster in a corresponding move.

McCann -- who was placed on the 10-day DL in late May with the same injury -- has been out of the lineup since Saturday, and he had been taking alternate turns with Max Stassi behind the dish over the six games prior. The 34-year-old veteran is hitting .206/.283/.323 this year over 173 plate appearances, with five homers, 17 RBIs and 72 wRC+, all well off his marks from an otherwise productive season…