Noun, Suru verb, Intransitive verb
fall; tumble; spill; plunge; dive
阪神三日天下。あっと言う間に首位から転落しちゃったよ。Hanshin's moment of glory didn't last. They fell out of first place in a hurry. fall (in position, standing, etc.); downfall; descent; degradation; comedown; demotion
Also written 顛落【てんらく】