By JOHN JAMES MARSHALL/Designated Writers

You’ve heard it before, but one of the many great things about baseball is that there is no clock. In Major League Baseball, you’ll need to get 27 outs. You play it until it’s over. Could take two hours, could take four. But there is no taking a knee or dribbling out the clock.

(As a quick aside, I always wonder why some baseball coaches wear a watch. Are they taking medicine?)

Anyway, with all of this “speed the game up” business these days, there is a smattering of support going on for implementing a mercy rule in the major leagues. If a team is up by 10 runs after seven innings, sack up the bats and go home.

Granted, a monster comeback rarely happens, but it has. You will, of course, remember June 15, 1925, when the Philadelphia Athletics put up a 13-spot in the eighth inning and beat Cleveland 17-15 (the A’s didn’t even have to bat in the ninth). It took 76 years, but the Indians got on the other side of it by rallying from 12 down and beating Mariners 15-14 in a 2001 game. In the 1929 World Series, the Athletics came back from 8-0 to score 10 in the seventh and win Game 4.

So it can happen. Even in meaningful games.

The thought here is that enough is enough and, more importantly, nobody wants to watch position players pitch at the end of the 15-2 game. Which is the point: They don’t have to.

If these analytics hacks stopped running baseball, teams wouldn’t be running out of pitchers. Note to front offices — relievers are allowed to throw more than seven pitches in a game without being removed for another pitcher who will throw seven pitches.

Change is fine — after all, the DH has been around for almost 50 years — but let’s not go crazy. If weather shortens a game, that’s one thing. But if you pay for nine innings, you should get nine innings.

Plus, you might find out that the backup shortstop has a nasty changeup.