Brian McCann to have knee surgery, out 4-6 weeks

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Ken Rosenthal reports that Astros catcher Brian McCann needs surgery on his right knee that will keep him out 4-6 weeks.

McCann was placed on the disabled list yesterday due to more troubles with his right knee which has ailed him for much of the season. He’s now out at least until mid-August. In his absence, Max Stassi will spend most of the time behind the plate. Tim Federowicz was called up yesterday to serve as the backup. If that doesn’t work out well, you have to figure the Astros will be sending extra scouts to follow J.T. Realmuto and the Marlins, right?

McCann, who last played on June 30, is hitting .206/.283/.323 with five homers.