What's going on with Arsenal? West Ham is destroying, taking third goal in the first half.

West Hami has scored the third goal and is now advancing 3-0 as the host of Arsenal, in the match for 29th week at Premier League, writes Periscope. Michael Antonio made it in the 33rd minute for 3-0, as he jumped the highest in the area in a cross from the right arm. [...]
West Hami has scored the third goal and is now advancing 3-0 as the host of Arsenal, in the match for 29th week at Premier League, writes Periscope.
Michail Antonio made it in the 33rd minute for 3-0, after jumping the highest in the area in a cross from the right arm yet the goal was counted by Thomas Soucek after having last contact with the ball.
Look at the goal below:












