If the Pirates hang on to win the NL Central, it could be a four-gone conclusion.

The Bucs have had amazing success in one of the increasingly odd quirks of modern baseball scheduling — the four-game series. It’s a trend that has already continued in San Francisco, with their wins in the first two games of this four-play with the Giants.

This is the Pirates’ eighth four-game series of the season — and they’ve won six of the first seven, with a split of the other.

So their won-loss record in four-game series, up to the minute, is 22-8.

That includes the back-to-back home-and-home Interleague two-game sets with Detroit. But it doesn’t even include the recent five-game set with the Cardinals, of which the Bucs won four.

Great news: Two more four-game series remain on the schedule, consecutively against the Cubs and the Padres Sept. 12-19 in PNC Park.