Despite receiving some criticism for their negative performance, Ba believes that Chelsea executed their game plan perfectly.
"We always have a plan, you don't just go out on the pitch and play the way you want to play, you always have a plan," he told the club's official website.
"[For this match] it was to prevent them from scoring in the first few minutes because we've seen with every game they play at home they rush out and score goals.
"We had to prevent them from doing that, which we did in the first 15 to 20 minutes. Because of the way we play it's difficult for the other team to score."
Sunday's result has seen Chelsea move to within two points of leaders Liverpool in the Premier League table.