Arsenal replied after Giroud turned in Sagna 's cross to become the first player in the English Premier League who always scores the 1st goal in a league game .
Arsenal have a better 2nd half goal ratio to the 1st half .
Arsenal , who have a better 2nd half goal ratio to the 1st half , replied after Giroud turned in Sagna 's cross to become the first player in the English Premier League who always scores the 1st goal in a league game .