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The steel cage is not a backdrop in Lockdown's format.
It is the match condition for the entire card, removing disqualification finishes and ringout saves and leaving only pin, submission, or cage exit as resolution paths.
TNA last ran Lockdown as a pay-per-view in 2014 and last staged the event at all in 2016. It returns Sunday at Credit Union Arena in Chicago on TNA+, starting at 5 p.m.
Pre-show matches stream free on TNA's digital platforms.
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