CHICAGO -- The Padres announced their roster for the National League Wild Card Series ahead of Game 1 on Tuesday, with a major shakeup at catcher -- the result of a lingering left oblique injury for Elias Díaz .

Díaz, who sustained the injury while taking a swing on Saturday, was not cleared to be part of the 26-player squad for the series against the Cubs, which begins Tuesday at 12:08 p.m. PT. Instead, the Padres opted to carry three catchers -- calling up both Luis Campusano and Martín Maldonado , neither of whom has spent time with the big league club since before the Trade Deadline.

Freddy Fermin , acquired at that Deadline, remains the presumed starter behind the plate. The Padres’ decision to call up two backups likely stems from the fact that they could pinch-hit for Fermi

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