After the Yankees’ Mariano Rivera tore his ACL during batting practice in Kansas City, well-wishes came from all over baseball, and Rivera vowed to return in 2013 after expected surgery to repair the knee injury.

He visited with doctors on Monday to begin the process. It didn’t go as well as expected. George A. King III:

Mariano Rivera’s visit with surgeons yesterday was expected to result in a date for surgery to repair a torn right ACL.

However, things didn’t go as smoothly as expected.

"We ran into complications,’’ agent Fernando Cuza told The Post. "I am referring to Dr. Ahmad and [Yankees general manager] Brian Cashman for further information.’’

Neither Cuza nor the Yankees would elaborate on what was discovered when Rivera met with Yankees team physician Dr. Chris Ahmad, Dr. Russell Warren, the Giants’ physician, and David Altchek, the Mets’ doctor, who performed surgery on Rivera’s shoulder after the 2008 season.

That doesn’t say much… no details on what was discussed or what the “complications” were, and as noted, no one’s saying anything about it yet.

So all we can do is wait, as always, for further developments.

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