Everton had to come behind for the second season in a row at The Hawthorns, but once again proved a resilient side as Kevin Mirallas brought us level, and then Gareth Barry turned unlikely match winner in the second half.
Koeman admitted it was a tough task, but says it could have been an even bigger scoreline if Barkley and Lukaku had taken chances late on.
“We played well but it was still difficult because it always is coming to this place,” he said.
“When West Brom scored to make it 1-0, that made it harder to create. When we made it 1-1, it was a key moment in the game.
“In the second half we played good football. The subs had a big impact on the final result but we forgot to kill the game.
“We had two big chances – one for Barkley and one for Lukaku. You need to be lucky with second balls, but there was good defending, good spirit and we deserved the three points today.”