This is good to hear. His free throw shooting has been worse than terrible.
Rondo, an early arrival, hard at work - Celtics Blog - Boston.com
With Orlando in town again tonight for the first time since that playoff series, Rondo sat on the bench watching film of his free throws with Celtics assistant coach Armond Hill more than 3 1/2 hours before gametime. The pair then took to the court to practice Rondo's form. "That's too much," Rondo said of his grip on the ball, his right hand cocked out awkwardly to his right side. "Just square it up," said Hill, a patient teacher. "I'm straight!" Rondo shouted back, taking another free throw. "My elbow is straight." "You think its straight," said Hill. "I can show you right on film, right now." How concerning is Rondo's current free-throw percentage (currently at 25 percent)? Celtics GM Danny Ainge came out to check on the lesson, giving Hill and Rondo a putting analogy from golf. Hill, who played eight seasons in the NBA, took the time to put his hands on Rondo's elbow to shift it into the right position.