Brandon Sproat was not one of the two Mets promoted to the majors on Monday, when MLB rosters expanded from 26 to 28 players.

Instead, infielder Luisangel Acuna and reliever Justin Hagenman, who already are members of the 40-man roster, are returning to the big leagues for the final month of the regular season.

That does not mean Sproat's hopes of making the majors this season have ended. While he is not on the 40-man roster following the Sept. 1 deadline, which suggests he would be ineligible for the postseason as well, the 24-year-old right-hander can still get to the big leagues as an injury replacement, considering he was in the organization prior to Aug. 31.

The Mets are already using a six-man rotation after fellow prospects Nolan McLean and Jonah Tong got calls to the majors befo

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