Kodai Senga is hopefully a week to ten days away from doing “upright throwing,” president of baseball operations David Stearns told reporters Friday at a news conference, so he can’t yet offer a guess on the ace’s chances of pitching in October should the Mets make the playoffs.

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“He’s still going through sort of the initial stages of the recovery,” Stearns said at Citi Field. “The good news is because it’s a lower body injury he’s able to keep his arm going. But we haven’t done any upright throwing yet. We are still kind of in immobilized throwing so I can’t answer the question of the likelihood that he’d be ready to go in October. I think we really need to get him upright and throwing, see how his arm responds and then we got a little bit of a better understanding of where this is headed.”

Senga was placed on the injured list on July 27 with a calf strain after leaving his first start of the year early against the Atlanta Braves. He also missed the first four months of the season with a capsule strain that he suffered during spring training.

Reporters also asked about minor league right-hander Brandon Sproat, who has risen to Triple-A Syracuse after starting the season in High-A Brooklyn.

“I think he’s had about as good a minor-league season as you can possibly have,” Stearns said. “I think he’s thrown more strikes, he’s rounded out his arsenal. He’s improved his change up. He’s competed at a very high level, very consistently. He’s bounced back from the occasional rough outing, so we’ve been very pleased with his development this year.”

Sproat is 6-3 with a 2.55 ERA and 1.000 WHIP this season. He has 116 strikeouts in 95 1/3 innings across 19 appearances (18 starts), and on Aug. 2 he struck out 13, including 11 in a row during an outing for Double-A Binghamton. Sproat was the Mets’ lone representative in the All-Star Futures Game this year.

“He just needs experience,” Stearns said. “This is still a very new player to professional baseball and he has moved very rapidly through our system and he has earned that and he deserves that. But I think we need to make sure that he also dominates the level he is at now before we really start talking about what comes next.”

Stearns was also asked if Sprout or INF/OF prospect Luisangel Acuña could get called up in September.

“I don’t think I’d take anything off the table at this point,” Stearns said. “Those calls are going to be made by what the team need is at that particular point in time. And clearly your roster isn’t frozen in September so it’s highly likely that whoever we call up on September 1, those positions could rotate as we get through the month of September.”