Giannis Antetokounmpo was not surprised the Milwaukee Bucks lost to the Boston Celtics due to his team's approach to Thursday's game and warned their rivals would "kick our a**" again if they repeated the performance.

The Bucks retain a two-game lead over the Celtics at the top of the Eastern Conference but suffered a humbling 140-99 defeat in the teams' final meeting of the regular season.

Milwaukee will expect to meet Boston again in the playoffs, and Antetokounmpo hopes they will "change some stuff" for that matchup.

He bemoaned the Bucks' attitude in their home loss, saying: "We know what the deal is. It's not hard to understand. If you're not focused, if you don't play hard, they're going to kick our a**. Simple as that.

"There's no level of concern. It's a fact. Now you have this in your head, and it's up to us to see how we're going to deal with it.

"Are we going to go and play the same way? If we play the same way, we'll have the same outcome.

"We've got to change some stuff. We've got to compete. We've got to have some pride."

The Celtics have lost ground in a month in which they have gone 9-6 – to the Bucks' 11-5 – following a number of unexpected defeats.

But Boston continue to respond well to those setbacks, the latest being this week's loss at an undermanned Washington Wizards.

"We've been pretty consistent all year long for the most part," said two-time All-Star Jaylen Brown. "We probably should be closer to 60 wins at this point, but we're a better team than we were last year. We've won more games than we did last year.

"Overall, we haven't dropped the ball; we might have lost some games, but we haven't let a bad game turn into a bad two weeks or a bad month. We've been able to bounce back."