Lukas Podolski (L) of Arsenal scores his first goal during the Barclays Premier League match between Arsenal and West Ham United at Emirates Stadium in London, Britain on April 15, 2014. Arsenal won 3-1.(Xinhua/Wang Lili)

Olivier Giroud (L) of Arsenal celebrates scoring during the Barclays Premier League match between Arsenal and West Ham United at Emirates Stadium in London, Britain on April 15, 2014. Arsenal won 3-1.(Xinhua/Wang Lili)

Lukas Podolski (R) of Arsenal celebrates scoring his first goal with teammate Per Mertesacker during the Barclays Premier League match between Arsenal and West Ham United at Emirates Stadium in London, Britain on April 15, 2014. Arsenal won 3-1.(Xinhua/Wang Lili)

Lukas Podolski (C) of Arsenal celebrates scoring his second goal with teammates Olivier Giroud (R) and Aaron Ramsey during the Barclays Premier League match between Arsenal and West Ham United at Emirates Stadium in London, Britain on April 15, 2014. Arsenal won 3-1.(Xinhua/Wang Lili)

Lukas Podolski of Arsenal celebrates scoring his second goal with teammate Olivier Giroud (R)during the Barclays Premier League match between Arsenal and West Ham United at Emirates Stadium in London, Britain on April 15, 2014. Arsenal won 3-1.(Xinhua/Wang Lili)

Lukas Podolski of Arsenal celebrates scoring his second goal during the Barclays Premier League match between Arsenal and West Ham United at Emirates Stadium in London, Britain on April 15, 2014. Arsenal won 3-1.(Xinhua/Wang Lili)

Olivier Giroud of Arsenal celebrates during the Barclays Premier League match between Arsenal and West Ham United at Emirates Stadium in London, Britain on April 15, 2014. Arsenal won 3-1.(Xinhua/Wang Lili)

Olivier Giroud (L) of Arsenal celebrates scoring with teammate Tomas Rosicky during the Barclays Premier League match between Arsenal and West Ham United at Emirates Stadium in London, Britain on April 15, 2014. Arsenal won 3-1.(Xinhua/Wang Lili)