Robert Martin better known by his nickname "50", is a streetball

Streetball

Streetball or street basketball is a variation of the sport of basketball, typically played on outdoor courts and featuring significantly less by way of formal structure and enforcement of the game's rules...

 player whose fame rose during his years on the AND1 Mixtape Tour

AND1 Mixtape Tour

The AND1 Live Tour, formerly known as the AND1 Mixtape Tour, is a traveling basketball competition and exhibition presented by B-Ball and Company and the basketball apparel manufacturer AND1. A group of streetball players, along with Emcee Rell and B-Ball and Company CEO Linda Hill, travel from...

. He is 6'8" tall and weighs 210 lbs. He was given the name "50" because people said he has a 50-inch vertical jump

Vertical jump

A vertical jump or vertical leap is the act of raising one's center of gravity higher in the vertical plane solely with the use of one's own muscles; it is a measure of how high an individual or athlete can elevate off the ground from a standstill.-Types of vertical jump:The vertical jump is...

.

Martin, born and raised in Atlanta

Atlanta, Georgia

Atlanta is the capital and most populous city in the U.S. state of Georgia. According to the 2010 census, Atlanta's population is 420,003. Atlanta is the cultural and economic center of the Atlanta metropolitan area, which is home to 5,268,860 people and is the ninth largest metropolitan area in...

, Georgia

Georgia (U.S. state)

Georgia is a state located in the southeastern United States. It was established in 1732, the last of the original Thirteen Colonies. The state is named after King George II of Great Britain. Georgia was the fourth state to ratify the United States Constitution, on January 2, 1788...

, graduated from Tri-Cities High School

Tri-Cities High School

Tri-Cities High School is a public high school in East Point, Georgia, United States. It is a part of the Fulton County School System. The school opened in 1988 under the leadership of principal Dr. Herschel Robinson. It was originally formed by combining 4 schools: Woodland High School, Russell...

 in 1991. He attended Middle Georgia College

Middle Georgia College

Middle Georgia College is a publicly supported, residential,charter unit of the University System of Georgia, in the city Cochran in the U.S. state of Georgia. Founded in 1884, the school is the oldest two-year college in the United States. It is currently being transformed into a 4 year college...

 from 1991 to 1993 before transferring to High Point College (now High Point University

High Point University

High Point University is a private liberal arts university in High Point, North Carolina, USA, affiliated with the United Methodist Church.- Beginnings :...

).

In 1995 he joined the Atlanta Trojans of the USBL. From 1995 to 1998 he played in Europe, then in 1998 he played for the Rochester Skeeters

Rochester Skeeters

The Rochester Skeeters was a professional basketball club based in Rochester, Minnesota that competed in the International Basketball Association beginning in the 1998-1999 season. The team folded after the 1999-2000 season....

 of the IBA

International Basketball Association

The International Basketball Association was founded by Alexandria, Minnesota entrepreneur Thomas Anderson in 1995. Anderson traveled the Upper Midwest searching for franchise owners for a couple of years before the league began play with five teams in the 1995-1996 season...

. In 2001, Martin was offered on a spot on the AND1 Tour.