You want to gripe about the recent run of deplorable starts by Yankee pitchers, howl your lungs out.

The numbers are ugly to the point where Domingo German’s 5 ¹/₃-inning stint against the Red Sox on Sunday night at Fenway Park when the Yankees snapped a three-game losing streak was a huge upgrade.

The first-place Yankees still lead the Rays by 8 ¹/₂ games in the AL East and the Red Sox by nine, but they have lost five of their past eight games.

In those eight games — before Sunday’s 9-6 victory — Yankee starters were 1-5 with two no-decisions and a whopping 13.78 ERA. They allowed 59 hits, 10 walks and hit two batters in 32 innings. Ten of those hits were homers.

However, the pitching ills don’t stop with the starters.

“In the bullpen we’ve had our struggles, too,’’ Zack Britton said of the high-priced pen that at times hasn’t pitched to the financial commitment made by the Yankees and has been without stud right-hander Dellin Betances all season. “Coming in and hold leads or keeping the game close. We can do better than we have.’’

Considering the Yankees relievers are fourth in the American League with a 3.90 ERA, they have done better in the first four months of the season than they have lately.

With the trade deadline at 4 p.m. Wednesday, GM Brian Cashman was asked about his pen.

“Working all angles,’’ he wrote in a text on Monday.

In the past eight games, the bullpen, not including catcher Austin Romine’s one inning in a 19-3 loss to the Red Sox on Thursday night, has posted a 4.91 ERA, has given up 44 hits and walked 19 in 36 ²/₃ innings. That is a whopping 63 baserunners, which provides too many chances to score.

The biggest offender has been All-Star closer Aroldis Chapman. In his past eight games, Chapman has flushed three of six save chances, walked nine, given up eight hits in 7 ²/₃ innings and posted an 8.22 ERA. When Chapman is off, much is made of a dip in velocity, but Sunday night he hit 99 mph with four of the 13 fastballs he threw. Wednesday against the Twins in Minnesota, Chapman’s fastball reached 101 mph.

Of course there is more to pitching than pushing speed guns near or into triple digits. Nine walks in 7 ²/₃ innings is far too many, and it was a leadoff walk to Mookie Betts to start the ninth inning Sunday that helped the Red Sox cut a five-run Yankees lead to three.

Adam Ottavino has given up 10 hits and walked five in 8 ²/₃ innings in the last dozen appearances in which batters are hitting .286 against him. Britton’s numbers in his last nine games are good (10 strikeouts, seven hits in 7 ²/₃ innings), but he walked two batters in the eighth Sunday night to load the bases.

According to Britton, Tommy Kahnle has stood out among all the arms in the pen.

“Tommy is throwing absolutely unbelievable. He has been our best bullet down there the last week or so,’’ Britton said of the right-hander with mid-90s heat and a Bugs Bunny changeup. “He has been huge, extended innings, against lefties and righties.’’

The numbers support Britton’s praise. Kahnle has allowed four hits, one earned run, struck out 15 and walked two in the last 11 outings.

“We can do a better job of being more consistent,’’ Britton said of a bullpen that may or may not get help by Wednesday afternoon.