Can you guess who these professional athletes are?

Many professional athletes started playing the sports they found careers in at a young age -- but we don't often see them from their little league or youth basketball days. Athletes like Derek Jeter and Tom Brady dabbled in other sports before finding their true callings. Some were labeled prodigies of their craft at ages when many other kids were still getting the hang of walking. There are also athletes who followed in their parents' footsteps.

Click through the gallery below to put your sports knowledge to the test with throwback pictures of some of the top names in sports -- because who doesn't love a little friendly competition?

Athletes in their younger years
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Athletes in their younger years

This athlete was considered a prodigy of his sport at just 2 years old.

Click to the next picture to reveal the answer. 

(Photo by CBS via Getty Images)

ANSWER: Tiger Woods

(Orlando Ramirez/USA TODAY Sports)

This young boy would become a baseball legend. 

(Photo by Mark Rucker/Transcendental Graphics, Getty Images)

ANSWER: Babe Ruth

(Photo by George Rinhart/Corbis via Getty Images)

This high school basketball star would go on to a four-time Olympic medalist. 

(Photo by Tony Duffy/Getty Images)

ANSWER: Lisa Leslie

(Photo by Montana Pritchard/The PGA of America via Getty Images)

This young boy now has fans waving to him as he competes on the basketball court. 

(Photo by Andrew D. Bernstein/NBAE via Getty Images)

ANSWER: Stephen Curry

(Gary A. Vasquez-USA TODAY Sports)

This picture was taken on the day that this legend signed to play in the NBA.

(Photo by Dick Raphael/NBAE via Getty Images)

ANSWER: Larry Bird

(Photo by Brian Drake/NBAE via Getty Images)

The 16-year-old pictured here would strike this pose several more times during his career. 

(Reuters Photographer/Reuters)

ANSWER: Michael Phelps

(REUTERS/Dominic Ebenbichler)

These girls would compete together -- and against each other throughout their athletic careers. 

(Ken Levine via Getty Images)

ANSWER: Venus and Serena Williams

(Photo by Jason Heidrich/Icon Sportswire via Getty Images)

The young boy pictured here in his father's lap played 18 seasons in the NFL.

(Bettmann via Getty Images)

ANSWER: Peyton Manning

(Chris Humphreys/USA TODAY Sports)

This young man spent two years at Michigan State before entering the NBA draft. 

(Bettmann via Getty Images)

ANSWER: Earvin Magic Johnson

(REUTERS/Danny Moloshok)

This young girl was the first American woman to earn an Olympic medal in judo.

(Photo by David Finch/Getty Images)

ANSWER: Ronda Rousey

(Mark J. Rebilas-USA TODAY Sports)

This athlete is undefeated in his sport. 

(Photo by: The Ring Magazine/Getty Images)

ANSWER: Floyd Mayweather, Jr.

(REUTERS/Steve Marcus)

This young man held dozens of records in the NHL. 

(Photo by Bruce Bennett Studios/Getty Images)

ANSWER: Wayne Gretzky

(Photo by Andrew D. Bernstein/NHLI via Getty Images)

This multi-sport athlete ended up choosing baseball for his professional career. 


ANSWER: Derek Jeter

(Adam Hunger/USA TODAY Sports)

The young man pictured here now owns numerous NBA "youngest player" records.


ANSWER: LeBron James

(Photo by Jason Miller/Getty Images)

The athlete pictured here driving toward the goal is an Olympic gold medalist. 

(Photo by John R. Van Beekum/The Washington Post via Getty Images)

ANSWER: Mia Hamm

(Photo by Tullio M. Puglia/Getty Images for Golden Foot)

There are two professional athletes in this picture.


ANSWER: Matthew Stafford (NFL) and Clayton Kershaw (MLB)

(Photo by Jason Merritt/Getty Images)

The basketball player pictured here is a member of the NBA's elite 30,000-point-club.  

(Photo by Holger Sauer/Getty Images)

ANSWER: Dirk Nowitzki

(Jerome Miron/USA TODAY Sports)

This young boy is now a well-known NFL linebacker.


ANSWER: Clay Matthews

(Photo by Leon Halip/Getty Images)

This 17-month-old boy would follow in his father's footsteps.

(Photo by Colin McConnell/Toronto Star via Getty Images)

ANSWER: Prince Fielder

(Anthony Gruppuso-USA TODAY Sports)

The baby on the left side of this photo is one of the most popular soccer players in the world.

(Reproduction by Javier Heinzmann/LatinContent/Getty Images)

ANSWER: Lionel Messi 

(REUTERS/Juan Medina)

This freshman center for the UCLA Bruins would play 20 seasons in the NBA.

(Bettmann via Getty Images)

ANSWER: Kareem Abdul-Jabbar

(Photo by Michael Tran/FilmMagic)


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