That isn't logical or even a worthwhile statistic because it ignores nearly every other fundamental influence on the sport, to look at the sport in such a simple manner is reductive, pointless, and ultimately signals a lack of critical thinking. That is just cause-effect with conjecture. A player can have a good game in a loss, and a bad game in a win. A team sport is typically won and lost through the team, not one player; ergo the only bias here is coming from you.
The information you've completely ignored:
The other ten Chelsea players and subs
The eleven opposition plus subs
Formation and approach of both teams
Chelsea's form
Opponet's form
injuries
fitness
'bUt JoRgiNho PlaYs whEN teAM lOSes' is an argument you should be ashamed of.