Jason Heyward scratched

8/10/2010 - MLB Jason Heyward Atlanta Braves + more

HOUSTON -- Right fielder Jason Heyward has been scratched from the Atlanta Braves' lineup for Tuesday night's game against the Houston Astros because of a sore right knee.

He was replaced in right field by Melky Cabrera.

Heyward, who turned 21 on Monday, homered in Atlanta's 10-4 loss to Houston on Monday night. He became the fourth player to homer on his 21st birthday, joining Ted Williams (1939), Frank Robinson (1956) and Alex Rodriguez (1996) according to the Elias Sports Bureau.