That's Aston Villa striker Gabriel Agbonlahor planting Tomlinson into the grass and forcing the spritely singer out of the game. Once Tomlinson left the pitch, an even funnier thing happened.
Via Daily Dot:
Tomlinson, who wore "1D" as his shirt number, dusted himself off, but limped off the field and vomited when he reached the sidelines.
Of course, Agbonlahor became the target of rabid One Direction fans after the match, and received a flood of hateful tweets and death threats. A few of my favorites: