Tom Brady's best friends celebrate his 40th birthday

Many die-hard New England Patriots fans showed up to training camp with signs honoring Tom Brady on his 40th birthday. Even a pen full of goats was on hand for the celebration.

Brady's closest friends and family, including his wife Gisele, also shared heartfelt messages on social media. One of Brady's favorite receiving targets, Julian Edelman, put together a touching video tribute to his quarterback, capturing moments from Little League to Michigan to the NFL combine to Brady's five Super Bowl wins.

By the way, the goats are included to laud Brady as the GOAT -- greatest of all time.

Former teammate Vince Wilfork, the entire Patriots organization, the Boston Red Sox and the Hingham, Massachusetts, police department all celebrated Brady's special day.

Brady's 40th birthday was so big, even the NCAA and Major League Baseball sent their birthday wishes.

Brady will become the 20th quarterback to play in the NFL in his 40s when the Patriots host the Kansas City Chiefs on Sept. 7. New Orleans Saints quarterback Drew Brees, who turns 40 in January 2019, could be next in line to join the 40-year-old quarterback club.

-- John Wilmhoff