"In the initial 15 minutes we were very good," Bielsa said in his post-match press conference. "In the final 30 minutes of the first half we defended poorly. In the second half we defended well and attacked well.
"We played better in the second half than they did in the first half. The differences in the first half were smaller than in the second half.
"We created 10 opportunities at goal without taking into account the disallowed goals. They were sufficent to deserve a different result.
"I don't ignore in those 30 minutes they created danger that was important. In the hour we were the dominant side we were superior than West Ham were in the 30."