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Former unified heavyweight champion Andy Ruiz Jr, who famously upset Anthony Joshua in 2019, lost his latest comeback bout to Poland's Damian Knyba. The defeat further complicates Ruiz's efforts to return to title contention after years of inconsistent form since his peak. The result adds to questions about Ruiz's future in the sport, with observers noting his struggles to recapture the form that briefly made him a world champion.