Former Kentucky guard Rajon Rondo was selected to his first career All-Star game last week as a reserve. Already well on his way to a long and successful career in the NBA, Rondo has quickly placed himself on the brink of stardom in Boston in his third season in the Association.Rondo’s professional career to date has gone about as well as one could expect. He’s the starting point guard for arguably the NBA’s most storied franchise, has a championship ring on his finger and will head to the All-Star game next week to play with the world’s best players. Not bad for a guy who used to sit next to me in computer class in high school. But every star needs room to grow. While Rondo has been blessed to play along three of the game’s best players in Kevin Garnett, Paul Pierce and Ray Allen, he, at times, has been overshadowed by the star power of their long and established careers.Not anymore. Turn on SportsCenter or an NBA game on TNT and you’re likely to find a developing story in Boston. It’s Rondo – not Garnett, Pierce or Allen – who has quickly become the centerpiece of the Boston offense. Now I’m not dumb enough to sit here and write that Rondo is the best player on Boston. Boston has three potential Hall of Famers on its team. The Kool Aid isn’t that strong – at least not yet.But it is time to make room for Rondo as one of the stars in Boston. Garnett, Pierce and Allen have long been tabbed the Big Three. Well, it’s time to add one more number to the mix. How about the Big Four?Rondo’s play this season, especially of late, has made a strong case for it. The former UK star is averaging 14.3 points per game this season and a team-best 9.8 assists and 2.4 steals per game. With his elder teammates were battling injuries during the month of January, Rondo took hold of the team and averaged 16.2 points and 9.8 assists. He’s posted double-doubles in each of the past three games and is shooting a cool 52.9 percent from the floor this season.Now I know what some of you are thinking: Isn’t Boston struggling lately? I guess, if you call a 31-16 record struggling. The bottom line is that the Celtics are once again in the hunt for the NBA Finals and they have Rondo to thank for that.