Yoenis Cespedes’ season — and perhaps the start of his next — was hanging in the balance Tuesday as the Mets and the All-Star outfielder awaited another medical opinion on the slugger’s sore feet.

After the Mets’ 6-3 victory over the Padres, a team spokesman said Cespedes’ test results were under review by an out-of-state specialist. Cespedes was placed on the disabled list before the game.

An industry source indicated Cespedes earlier in the day had been leaning toward surgery to remove the calcifications in his heels — a procedure that could sideline him for eight to 10 months — but the Mets might have requested the additional medical opinion.

On Monday, Cespedes was examined by team physician David Altchek before receiving further evaluation by a foot specialist. Assistant general manager John Ricco had suggested on Monday that whether Cespedes continued this season would depend on his ability to manage the pain.

But the manner in which to proceed now won’t be resolved before Wednesday morning. The Mets originally expected to have Ricco convene with reporters Tuesday afternoon to discuss Cespedes’ situation, but that press conference kept getting delayed, until a team media relations representative informed reporters that Ricco would likely wait until after the game to speak. That plan, too, was scrapped.

Cespedes was at Citi Field in street clothes before the game and sat at his locker, speaking with various teammates as they passed.

Jeff McNeil was selected from Triple-A Las Vegas to take Cespedes’ roster spot, giving the Mets a full bench for the first time in four games.

Cespedes returned from a nine-week disabled list stint on Friday and homered as part of a 2-for-4 performance against the Yankees. But afterward, he expressed concern about his heels, which have been an issue since before his Mets tenure. During his postgame interview, Cespedes indicated he could need surgery to remove the calcifications and face that lengthy layoff.

Only adding to the circus, manager Mickey Callaway was left to answer questions a day later about Cespedes’ comments because Ricco was unavailable and the team didn’t want special assistant Omar Minaya put in the position of handling an unfamiliar issue. Callaway indicated he was unaware of what Cespedes had said — the manager later recanted on that response saying he “misspoke.”

Ricco subsequently said the organization knew about Cespedes’ foot issues before he signed a four-year contract worth $110 million with the Mets in November 2016.

Cespedes had two stints on the disabled list because of hamstring injuries last season, when he was limited to 81 games. The Mets were hopeful an emphasis on stretching exercises and hydration would keep his legs healthy in 2018.

But Cespedes incurred a sore hip flexor and quadriceps in May, necessitating his placement on the DL. During his rehab, Cespedes had a flare-up with his heels.

The Mets have viewed surgery as a last resort and clearly prefer to have Cespedes on the field as much as possible over the final two-plus months of this lost season. But if Cespedes were to undergo immediate surgery, he would likely be in position to play most of 2019 instead of risking a recurrence that would put that season in jeopardy.