New boy Timothy Castagne believes Leicester found West Brom's weak spots as they ran out 3-0 winners on his debut.
The left-back scored the opener in his first Premier League game for the Foxes at The Hawthorns on Sunday.
It was the perfect start to their new campaign, with Jamie Vardy also netting two penalties.
Castagne, who joined from Atalanta in a deal worth £21.5million this summer, told LCFC TV: "In some games, it's like this. You have to choose the moments and also, we have to find the weak spots of the opposing team and we could find it in the second half.
"We did it well, and that's why we won. We kept playing, we kept trying, and in the end, we didn't give anything away and scored three goals.
"Also, the most important thing is we won. We don't get goals against, so it's a team effort and I'm obviously very happy with my goal.
"The manager said at half-time that we have to play faster. Also he gave us some tactical things we should try or change.
"Obviously, it worked out pretty well, so that was good."
Defeat reminded the Baggies what they face after returning to the top flight after a two-year absence.
They are expected to complete the signing of ex-Chelsea defender Branislav Ivanovic soon to add much-needed Premier League experience.