Diego Costa does not look like the most approachable guy. He's got that weathered face, that 1000-yard stare. He's seen it all before, and he didn't like what he saw.
He's the type of player opposing fans love to hate, and Chelsea supporters love to cheer for. Chants of 'Diego, Diego' echoed around Stamford Bridge after his confrontation with Steven Gerrard and Martin Skrtel last night.
For a half second, a smile broke through. Might have been a twitch, though.
He came to England with a reputation for disciplinary issues.
Costa vs. Pepe and Sergio Ramos is absolute YouTube gold...
He fit in well under Diego Simeone at Atletico Madrid, a fiery South American himself, but there was concern over how his act would go over at Chelsea.
But he's the perfect player for Jose Mourinho, the perfect 'victim' for Mourinho to champion and rally his team behind.
The "campaign" is classic 'us against the world' Mourinho. Nobody likes us and we don't care. It's Millwall ideology on the Kings' Road.
But we at GiveMeSport wanted to go back and look at Costa's rap sheet for the season so far. Has he been harshly treated in his first season in the Premier League?
Away from the goals and man-of-the-match performances, here are some of his 'alternative' highlights…
Let's start with last night, and the stamp…
And the second stamp…
He plays on the edge, something Thierry Henry and Jamie Redknapp touched upon after them.
“You can see clearly that he meant that,” Henry said.
“I love the passion, I love the aggression but I think he went too far there.
“I think it was a red but the ref didn’t see it, the linesman didn’t see it and the fourth official didn’t see it.”
“We all love Diego Costa,” Redknapp told Sky Sports. “He’s a fantastic player. You would have him in your team any day of the week but he steps over the line sometimes.
“You know exactly what you’re doing there. You can hurdle someone’s leg but he’s definitely stamped on Skrtel."
Yes, we all love Diego Costa until he tries to stamp on us.
There was also the awkward face-to-face with Steven Gerrard…
Or the time he strangled Pablo Zabaleta…
Or the time he tried to kick John O'Shea in the head…
But there was also the time he was unfairly booked for diving against Burnley…
Or the time when Skrtel tried to rip his shirt off...
Costa is a fantastic player, but he's also a loose cannon who seeks out confrontation on the pitch. The two examples against Liverpool were poor errors of judgement from a good striker who has previous.
Chelsea could regret another outburst
For Chelsea to win the Premier League, they need him in the team. With the League Cup final, Champions League knock-out, and league title run-in over the next four months, the fixtures only ratchet up in importance.
If he carries on like he did last night, it won't be long before he misses a crucial game.
And that could cost Chelsea dearly.
Whether you're a Chelsea fan or not, do you think Costa crossed the line last night?