The Boston Celtics will face a much tougher opponent in the second round. After sweeping the Indiana Pacers in the first round of the playoffs, they will now have to go up against the league-best Milwaukee Bucks.

However, for Celtics forward Al Horford, the team is ready to go up against the Bucks. In an interview with Boston Sports Journal's Brian Robb, he said that the Beantwon team is now a different team compared to who and what they were in the regular season.

“It’s a big difference from where we were in September to now. There’s just clear understanding from each individual, what to expect, what we need to do, how we need to play,” Horford said.

The Celtics struggled for the majority of the regular season. With a lot of talented players, they didn't seem to know how to adjust with one another. There were times when they went toe-to-toe with the league's top contenders, and there were stretches when they can't even beat non-playoff teams.

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There were a lot of questions surrounding the team when they clinched a playoff spot. Some even predicted that they will lose in the first round. Nonetheless, the Celtics quickly erased those doubts by making quick work of the Pacers.

They shared the ball better and their defense has vastly improved. They also made crucial plays when the games mattered most. The Celtics are seemingly peaking at the right time, but their character and resilience as a team will be tested against the Bucks.

Boston plays Milwaukee in Game 1 of the Eastern Conference semifinals on Sunday.