This is the same reply I gave to Kaiser:
Andrew Marchand ESPN Senior Writer
Yankees manager Joe Girardi and Gary Sanchez said they were on the same page as far as Sanchez' trouble blocking pitches and his failure to run hard to first base. Girardi said he was not lecturing Sanchez, telling him in the dugout that he shouldn't get down over his three hard outs and advising the catcher on how to block balls better. Girardi also said that Sanchez was told not to run hard to first to protect a tweaked groin. At one point, Girardi told Sanchez to smile.
It could very well be that Joe has told him to take it easy and hold back a bit so as not to incur another injury...the Yankees have had enough of them lately, and losing your starting catcher would be a huge blow...Also, name a catcher that was a good base runner, they just typically don't have the speed...