3 years Rondo played for the Eastern High School, but later moved to Oak Hill Academy - a school which produced many NBA stars. Rajon gained an average of 21 points, and he was invited to the McDonald's All American Game-2004. After high school, Rondo came to the University of Kentucky. He became the main point guard and one of the team leaders. In 2005 he entered the Team of the conference newcomers SEC. He also received an invitation to participate in the World Youth Championship for Team USA. On a draft of its 2006 under the 21-th number chose the "Phoenix", but then he was immediately traded to the "Boston".Rondo spent the first season ambiguously: on the court for spending 23 minutes, he scored 6.4 points, but was the team leader in steals (1.6 average). Doc Rivers made on Rajon - a bet as to the main point guard. His main rivals Sebastian Tolfeyra Delonte West and, like many others, have given in exchange for Kevin Garnett and Ray Allen. And the rate worked. Rondo primarily gained confidence. Its average performance rose to 10.6 points, and the "Celtics" confidently advanced to the playoffs. Rondo did not give a doubt. Culminating in the 6th game of the final against the "Lakers." Rajon scored 21 points, gave 8 assists, 7 rebounds and made six interceptions.The following season he spent more productively. He made his first triple-double in the game with "Indiana", and then repeated this achievement twice. In the first round of the playoffs Rondo had to compete with the number one draft pick in 2008 by Derrick Rose. In the first game of the series Rajon scored 29 points, 9 rebounds and 7 assists. In the 2nd and 4th games submitted to him in the double-digit index glasses, selection and transfer, and in the second round of the game against the "Magic" young player repeated the achievement made by Larry Bird- third triple-double in the playoffs.In the 2009-2010 regular season, he scored 13.7 points, 4.4 rebounds, 9.8 assists and 2.3 interception (the best in the NBA), but in the playoffs, these figures were 15, 8, 5, 6 9, 3, 1, 9. Rondo was the best in the draw for the play-off Assist and interceptions, but his team lost in a bitter struggle in the 7th match of the final series. In 2009 and 2010, respectively, was included in the second and first team all-star NBA defense. Also, the 2009-10 season, he finally wait for an invitation to the NBA All-Star Game.In season 2010-11 Rajon second consecutive hit the All-Star game.
In the 2011-12 regular season, Rondo has issued the first triple-double, but was insulting a wrist injury and missed a few games the team.