1. David Robinson - David Robinson was only 5'9 during his junior year of high school but remarkably grew a staggering 15" in just a short space of time and was almost 7'1 by the time he was in college.
2. Scottie Pippen - It's usually rare for most people to grow after high school. Scottie Pippen beat the odds by growing from 6'1 to 6'8 after high school.
3. Dennis Rodman - Dennis Rodman stood at only 5'6 in high school. At age 19, he experienced an unbelievable growth spurt that propelled him from 5'6 to 6'8.
4. Tim Duncan - Before he turned 17, Tim Duncan stood at 6'3 which, though not short, wouldn't be considered tall by NBA standards. At age 17, Duncan had a massive late growth spurt which saw him reach a towering 6'11.
5. Anthony Davis - Between his sophomore and senior years in high school, Anthony Davis grew from 6′2 to 6′10. He went from a lightly-recruited guard to one of the best high school players in the country.
6. Dwight Howard - It's hard to believe that Dwight Howard stood at just 5'8 when he was 15 years. From the age of 15 to 16 years, Howard grew more than a foot. He went from 5'8 to 6'9 in just one year before finally reaching his adult height of 6'11.
7. Russell Westbrook - Russell Westbrook was only 5'8 as a freshman in high school despite having over-sized hands and size 14 feet. Before his senior year, Westbrook had a growth spurt that saw him grow from 5'10 to 6'3.
8. CJ McCollum - As a freshman at GlenOak High School, CJ McCollum stood at a mere 5'2. However, he benefited from a late growth spurt which saw him gain 9 inches by the start of his junior year before finally reaching his adult height of 6'3.
9. Manu Ginobili - Manu Ginobili had a massive late growth spurt in his late teens. He went from 5'8" to 6'6" when he was a senior in high school. He grew almost 10 inches in just 2 years.
10. Lamar Odom - At 6'2 in high school, it seems as though Lamar Odom was destined to be a point guard. Out of the blue, Odom experienced a late growth spurt that saw him grow from 6'2" as a high school senior to 6'9" his junior year of college.
11. Dennis Johnson - Dennis Johnson went from 5'9" as a high school senior to 6'4" in one year after graduation.
12. Lebron James - LeBron James was told by a doctor when he was 11 that he would only grow to be 6'3. James was able to beat the odds by growing from 6′1 to 6′8 in just two years.