The New York Yankees had a no good, very bad day yesterday. Here’s what went down in Yankees land.

The New York Yankees had a rough day yesterday. Not only did they blow the lead against the Boston Red Sox, they found out that Michael Pineda would likely be out for the season.

Worse? They found out what was really wrong with Greg Bird. And it doesn’t sound good.

Inflammation in the os trigonum is a congenital problem, where there is an extra bone that can get wedged in between the tibia and ankle bone, causing severe pain.

Bird, who was just last week criticized by an inside source about not wanting to return, just got official news that his injury was actually a real injury. So there, “inside source.”

Starlin Castro had already started his rehab assignment down in Double-A Trenton and is hoping to join the Yankees in Boston today.

Castro went 1-for-4 last night with a booming double in Trenton’s 2-1 loss to the Hartford Yard Goats.

Speaking of the minor leagues, newcomer Garrett Cooper got his first call of his career to the show. He made his major league debut with the Yankees last night.

Better yet, he already had a good group of fans cheering him on.

Cooper’s family made the trip to Boston to witness his big debut at The Show. Cooper went 0-for-4 on the night with three strikeouts. But, hey, as Brian Cashman said, the bar is set pretty low for first basemen.

Can the Yankees bounce back from the devastating loss to their mortal enemy? Can they avoid being swept at the hands of their rivals? Stay tuned this weekend to find out!