PEORIA, Ariz. — The Padres are calling Sung-Mun Song “day to day” after he departed Thursday’s game with “tightness” in his right oblique.

But they will take care to not rush him back after a recurrence of an issue that caused him to shut down his preparation for the season in January.

“I think we were trying to be cautious already,” manager Craig Stammen said. “And now we’ve got to probably be a little bit more cautious.”

Song, who spent the past nine seasons playing in the Korean Baseball Organization, had seemed to be adjusting at a rate that assured him a spot on the opening day roster as an extra infielder. With less than three weeks until opening, his beginning the season on the IL would at least seem to be a possibility.

The initial injury to the same side of Song’s abdomen occurred while swinging in the batting cage. He began the spring with a lighter workload and didn’t play in the Padres’ first two Cactus League games.

Song has impressed teammates, coaches and team officials with his strength and defensive skill, and he has worked hard to learn to catch up to the increased velocity he is seeing from MLB pitchers.

Stammen noted the transition Song is making off the field, adjusting not only to a new team and higher level of play but to a new culture.

“I think it’s just a reminder he’s getting a lot of things thrown at him — not just baseball-wise, but life in general,” Stammen said. “I’m sure all that has a lot to do with how our body recovers and the stresses it endures. So we will keep that at the forefront of our mind.”

Song began Cactus League play with just a walk in his first six plate appearances. But he has four hits (three on fastballs 95 mph or faster) and two walks his past 14 times to the plate. He homered on a 95 mph fastball his first time up Thursday. He struck out in his next at-bat, also in the second inning, and then played the bottom of the inning at shortstop before leaving the game.

According to Stammen, Song felt some general discomfort in the oblique area earlier Thursday.

“The way he described it wasn’t one actual (occurrence),” Stammen said. “I think if it had been one swing or one move, it probably would have been more significant.”

Pivetta pushed

Nick Pivetta, the Padres’ presumptive opening-day starter, is being given extra rest between starts due to what is described as arm fatigue.

Multiple people said there is no concern about any long-term issue. Pivetta did not throw a bullpen session on Friday, as he normally would have before his scheduled Sunday start. The plan is for him to throw in the bullpen in the next few days and be worked back into the game schedule, perhaps early in the week.

Logan Gillaspie will start in Pivetta’s place on Sunday against the Reds.

Adam on track

Stammen said Friday afternoon that reliever Jason Adam, who had surgery to repair a ruptured quad tendon in September, “has a chance to (be on the roster) out of spring training, and he has a chance to not.”

That does not align with Adam’s thinking. He has said all along his plan is to be ready for opening day.

And later Friday, he looked like he will be.

After throwing an inning’s worth of live batting practice, Adam did his most extensive fielding work of the spring — throwing to the plate and then fielding soft grounders hit by coach Vinnie Lopez and throwing to first and second base. The last thing Adam did was cover first base on a grounder to the right side.

He was not even all the way off the field when he began prodding pitching coach Ruben Niebla to put him in a Cactus League game as his next step.

It is not known yet what Adam’s next step will be.

He has been throwing bullpens since early December, and there is still ample time for him to get the three or so Cactus League appearances he and the Padres would like him to have to be ready for the start of the season.