CHICAGO -- The Mets, who completed two trades this week, are at least considering making another. The team on Tuesday scratched Ervin Santana from his scheduled start at Triple-A Syracuse, and manager Mickey Callaway confirmed that the move was made to give the Mets options should additional deals open holes in their rotation.

As of Tuesday evening, the Mets’ upcoming rotation was:

Tuesday, July 30, at White Sox: Noah Syndergaard

Wednesday, July 31, at White Sox: Jacob deGrom

Thursday, Aug. 1, at White Sox: Zack Wheeler

Friday, Aug. 2, at Pirates: Steven Matz

Saturday, Aug. 3, at Pirates: Marcus Stroman

But that is all subject to change as the Mets continued to shop both Wheeler and Syndergaard in the hours leading up to Wednesday’s 4 p.m. ET Trade Deadline, according to sources. Deals for either remained plausible, as did standing pat. When polled on Tuesday, multiple rival executives who have had dealings with the Mets said they had little inkling of which direction general manager Brodie Van Wagenen might take.

• Watch MLB Network for around-the-clock Trade Deadline coverage

Regardless, the Mets are preparing for an additional trade. If Wheeler goes elsewhere, Santana could fill in for him. Matz also indicated that he is ready to shift forward in the rotation if the Mets need him to do so.

“It’s all kind of in limbo right now,” Matz said.

While trading Wheeler, an impending free agent, has always been the Mets’ most likely course of action, one source acknowledged that the team is at least considering keeping its entire rotation intact. That would give the Mets, who entered Tuesday’s play with a 14 percent chance to make the postseason, according to Fangraphs projections, a better chance to make an improbable postseason run. But it would also prevent them from maximizing their return on Wheeler, who is unlikely to be a Met in 2020.

“It’s obviously a great rotation,” Callaway said. “That’s the kind of rotation that can get you on some pretty big runs. … Right now I’ve got those five guys slated to go, and that’s what I’m excited about.”

Long Island roots

Matz smiled when recalling the story of the first home run he ever allowed: a blast that Stroman hit when Matz was 8 years old.

“Back then, everybody knew who he was,” Matz said. “He was the best player around. We wanted to get him out, and he came out and proved that he was really good.”

From the ages of 8 to 18, Matz and Stroman frequently played with and against each other on travel teams as two of the best young players on Long Island. Matz, who grew up in Stony Brook, became a second-round Draft pick of the Mets in 2009. Stroman, from Medford, was the Blue Jays’ first-round pick three years later.

Since entering pro ball, the two mostly lost touch, though their fathers remain friends. But Matz and Stroman will be reunited in the Mets’ clubhouse on Wednesday, when Stroman is due to arrive after his trade from Toronto.

“He’s a great pitcher,” Matz said. “I’ve known him for a really long time, so it’s pretty cool that we play on the same team now.”

The story has one other Long Island connection -- former Mets prospect Anthony Kay, who went to the Blue Jays in the trade, attended the same high school (Ward Melville) as Matz.

“I’m probably going to reach out to him, but it’s a great opportunity for him, too,” Matz said. “Obviously, Toronto wanted him over there, so maybe he’ll get a chance.”

Taking a stand

First baseman Pete Alonso is teaming up with X Games medalist Gus Kenworthy in a DoSomething.org campaign against cyberbullying. The two athletes created a public-service announcement relating their personal experiences with cyberbullying, and encouraging viewers to take action whenever they see it in their daily lives.

“Cyberbullying is a prevalent problem in our society that needs to be addressed head-on,” Alonso said in a statement released by Major League Baseball. “I’m proud to be a part of the Shred Hate campaign and movement as well as join a variety of groups to help eliminate this negativity in our communities.”