Was it the worst own goal ever? Probably not, as that's one hell of a competitive field. There's this epic from the Oceania Champions League in Auckland this year, when Mickael Roche the Tahiti goalkeeper seemed to defy the laws of physics:
Or Sassuolo goalkeeper Andrea Consigli playing against Fiorentina in Italy's Serie A who somehow turned a regulation clearance from a back pass into his own box.