We finished our last blog post mentioning Michael Cox's proposed relationship between goals per game over the course of a Premier League season and the performance of Premier League teams in that season's Champions League competition. In his article for the Guardian on Monday, Cox provided anecdotal evidence that as goals per game in the Premier League increases from season to season, the performance of Premier League teams in the Champions League falls during that time. It turns out Cox took a closer look at the data and published his findings on his Zonal Marking blog the following day. Plotting 3 year goals per game averages against a 3 year average Champions League performance metric, Cox finds that there does appear to be a relationship. You can read his post and look at his graphs here.