Are there some football players who have better average than 1 goal per game in their club career? Or if we restrict only to one competition, not the whole career? Or to one season of a competition?
I think it would be good to restrict the question to top club competitions, such as top European leagues, Champions league, etc. (Although not everyone will probably agree which club competitions should be considered top.) And, clearly, we should also omit players who only played a few games.
Similar question for games at international level was posted recently here: Who is the best striker (best goals/appearances ratio) with 25/50/100+ national caps?