The Mets’ probable starting pitchers for this weekend remain undetermined, but manager Mickey Callaway hopes to have returning players from whom to choose.

Before the Mets’ 6-2 victory over the Nationals on Tuesday, Jason Vargas threw a side session and Steven Matz played catch. Both pitchers presently on the injured list will be evaluated Wednesday for potential duty this weekend in Miami.

Matz will throw a side session before the Mets reach a final decision, but Vargas could be cleared for a return to the rotation.

Callaway said he plans to start Jacob deGrom on Friday, with the following two days wide open. Vargas has been sidelined with a left hamstring strain and Matz has been out with a nerve irritation in his left forearm.

Wilmer Font, who is scheduled to face the Nationals on Wednesday, has taken a vacated spot in the rotation, but the Mets are without a fifth starter with Vargas and Matz sidelined.