Boston Celtics guard Marcus Smart took it to Twitter to reveal his feelings on getting an invitation to Team USA's minicamp for the FIBA World Cup in China.

Smart claimed that suiting up for the U.S. in the FIBA tournament will be a life-changing experience for him.

Smart was chosen a replacement after many NBA stars decided to drop out from selection for the USA roster. James Harden, Anthony Davis and Bradley Beal are just some of the big names that have withdrawn their names.

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Still, the United States has plenty of quality players to choose from, and Marcus Smart is a good example. Smart had a solid season for Boston in 2018-19. He averaged 8.9 points, 4.0 rebounds and 1.8 steals per game while shooting 42 percent from the field and 36 percent from deep.

Smart is known best for his defensive acumen. The bulky guard has developed a reputation as a ferocious defender who gives his all on the defensive end. Last year, he made the All-Defensive First team for the first time in his career, and it would be a shock if it ended up being his last appearance on one of these teams.

In Smart, Team USA gets a solid shooter and an excellent defender. By his tweet, he seems like he is ready to play his heart out for the team alongside his NBA peers and Celtic teammates.