SAN DIEGO — The trio of clubs watching the Holy Trinity of Smoke was reduced by one when the Cubs didn’t have a scout at Sunday’s Yankees-Padres game at Petco Park.

However, the Nationals and Rangers were represented for a third straight game and the Cubs have had more eyes on the trio than any other team in the past three weeks.

All three teams are looking for late-game bullpen help and the Yankees have Dellin Betances, Andrew Miller and Aroldis Chapman. The trio worked an inning each in Sunday’s 6-3 win over the Padres. The Yankees are 14-1 when all three participate in the same game.

Despite giving up a game-winning homer in the ninth inning to Melvin Upton, Jr. Saturday night, Miller remains in more demand than Chapman and will bring a better return if the Yankees decide to move the lefty.

“First, he is signed for two more years after this, is affordable [$18 million] and has better stuff,” a talent evaluator said of the 31-year-old Miller, who has a 1.47 ERA in 36 appearances and has whiffed 66 batters in 36 ²/₃ innings. “[Chapman] is a two-month rental. He throws harder, but Miller’s stuff is better.”

Chapman, 28, is sexier because he consistently pushes the speed guns past 100 mph and has converted 16-of-17 save chances.

While the Yankees certainly miss their leading hitter, manager Joe Girardi is faced with the task of needing Carlos Beltran back in the lineup versus rushing the switch hitter back too soon and losing him for an extended stretch.

Beltran wasn’t in the starting lineup Sunday for the fifth straight game due to a right hamstring problem and neither he nor Girardi was sure of a return Monday in Chicago when the Yankees open a three-game series against the White Sox.

Beltran ran, fielded balls and threw in the outfield before Saturday’s game and grounded out as a pinch hitter in the seventh inning Sunday.

“I have been encouraged the last couple of days. The one thing you have to be careful with is that you don’t run him out there and jeopardize hurting it worse and then losing him for a long time,” Girardi said of the 39-year-old Beltran who is leads the Yankees in batting average (.299), home runs (19) and RBIs (53). “I am not so sure if he says he is ready to go [Monday] where I am going to put him.”

The three games at Petco Park against the Padres didn’t leave Girardi with a choice. If Beltran couldn’t play right field — and he couldn’t — there was no DH allowed in the NL ballpark. Monday, the DH spot is an option and considering how careful the Yankees are with injuries there is a good chance if Beltran plays Monday it will be only as the DH. That would chain Alex Rodriguez to the bench for a fourth straight game. He grounded out as a pinch hitter Sunday.

“I have to manage myself and I can’t be crazy about it. At the same time I am there to give my club a chance to win a ballgame. If I am at second base and the ball is hit through the middle, I have to score on that play,” Beltran said. “The way I was feeling the past couple of days, I couldn’t do that. [Saturday] I felt a little more confident about it. Hopefully [Monday] is the day I got to go out and test it. The only way I am going to find out is test it.”

Didi Gregorius tied his career-high in homers with his ninth in the fourth inning and pushed his hitting streak to seven games. During the streak Gregorius is batting .367 (11-for-30).