Chelsea's Diego Costa punches himself and gets trolled on Twitter

Seriously, how do you manage to punch yourself?! Sort yourself out Diego...

It's pretty safe to say that things aren't quite going to plan for Diego Costa this season, and were not sure if they're going to get any better.

First off, he's only scored two goals in the Premier League in seven games, and only one of those has come in the last two months.

Then, Costa faced the ire of loads of Arsenal fans after his antics in the London derby, after he got involved in incidents with Laurent Koscielny and Gabriel. 

But surely when Costa came up against Stoke City in the Capital One Cup, things would get better for him...right? Well, no, in fact, they probably got much worse!

So what did he do? Well, the Spanish striker was forced to withdraw after just half-an-hour against Stoke with a reported rib injury. I know what you're thinking, but according to Jose Mourinho, Costa's injury was a bit more comical, telling the Mirror: "He is in the hospital - I don't know. I think he punched himself." 

... he's really that angry that he punched himself?! 

As you can imagine, Twitter had a field day at Costa's expense: 

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