Reece Burke said the Hammers' professional attitude helped them get the result they wanted against FC Lusitans on Thursday.
Diafra Sakho scored twice and James Tomkins was also on the scoresheet as West Ham United secured a 3-0 win in their UEFA Europa League first qualifying round first leg tie.
Burke played the 90 minutes at the back and said the result was all in the planning.
"I thought we played really well. We came back early and only had ten days to prepare for the game but I thought we played well and could have had more goals," he said.
"Every game is competitive and we treated it as a normal game. Yes, we were expected to win, but we prepared properly and got the win."