Maybe serious fantasy baseball owners have known about this all along. I tumbled to it last year, and it saves a lot of time when you’re trying to figure out who does what in Major League bullpens.

The Closer Monkey.

That is the name of the website — closermonkey.com … where you can get the most recent/best information on the ever-changing world of guys in line to get saves — a key stat in most ball fantasy leagues.

Whoever runs the Closer Monkey site … does most of the work you would otherwise have to do while trying to figure out who likely will get a save chance on a daily basis for any of the 30 MLB teams.

(It is maddening, fantasy baseball players can attest, when you spend an hour looking for updated information on the injury to this reliever, the demotion for that one. The Closer Monkey does it for you.)

I have no recollection of how I first stumbled on the site … perhaps some content was picked up by a more general aggregator, and then I clicked on the link — and found those blue-backgrounded pages and the grid of all 30 teams’ late-inning pitchers … and shouted “Eureka!”

I have found the monkey to be pretty prompt and accurate. I don’t subscribe to the instant updates, but the information on the main site seems in something close to real time.

He sometimes makes informed guesses in situations where managers have not been forthcoming about what is going on and does well in anticipating decisions.

The key bits? His updated rankings of the top three guys in every bullpen. The current closer, the first guy in line to replace, and the second. (Generally, the first in line is the eighth-inning guy, and the second in line is the seventh-inning guy …)

Shifts in the way baseball managers use their bullpens could keep the monkey on his toes this season. The likes of Cubs manager John Maddon could be using “closers” in “high leverage” situations — like the seventh inning of a one-run game — meaning that anticipating who gets the last out (and the save) could be even harder to predict.

The guy (and the answers at the monkey’s FAQ page suggest it is a guy) has a sense of humor, too.

To wit:

The monkey is wearing an orange and blue hat. Does that mean the monkey is a Mets fan?

No. The monkey is a Knicks fan. He hates baseball, but is obsessed with closers.

The monkey is a “he”?

Of course. Stupid question.

He, she or it … closermonkey.com is a resource worth following.