Jeffrey Michael "Jeff" Gordon will be 44 years old on August 4.

(FOX) – The four-time NASCAR champ announced today that 2015 will be his
last season as a full-time driver. In fact, it could be the last year he drives at
all, but he’s not ready to say he’ll never race again,

Gordon said "[There’s] always the possibility I’ll compete in selected events,
although I currently have no plans to do that”. 

The 43-year-old won four races in 2014 and finished the season in sixth
place. Teammates and competitors took to Twitter to voice their respect
for Gordon.

Camille Bohannon

Muhammad Ali (born Cassius Marcellus Clay, Jr.) is 73 today

Jay Hanna "Dizzy" Dean (January 16, 1910 – July 17, 1974)

Dizzy Dean was a four-time MLB All-Star for the St. Louis Cardinals,
Chicago Cubs and St. Louis Browns; he helped lead the Cardinals
to a World Series title in 1934 and was named 1934 National League
MVP after going 30–7 with a 2.66 ERA.

Carlota Bradley

Ross Simpson

 
Dave Garroway and co-host J Fred Muggs.

Dave signing-off the first Today show in 1952.

David Cunningham "Dave" Garroway (1913 – 1982) was the founding 
host and anchor of NBC‘s Today from 1952 to 1961.