What's the largest MLB contract ever signed?

Answer: Giancarlo Stanton - $325,000,000 

Here's a list of the top 20 from The Baseball Prospectus and the going rate for their memorabilia online. Click on the pictures to see how much people are paying.

The most lucrative contracts in baseball history, by total value:

1. Giancarlo Stanton, $325,000,000 (2015-27)

2. Alex Rodriguez, $275,000,000 (2008-17)

3. Alex Rodriguez, $252,000,000 (2001-10)

4. Miguel Cabrera, $248,000,000 (2016-23)

5. Albert Pujols, $240,000,000 (2012-21)
… Robinson Cano, $240,000,000 (2014-23)

7. Joey Votto, $225,000,000 (2014-23)

8. David Price, $217,000,000 (2016-22)

9. Clayton Kershaw, $215,000,000 (2014-20)

10. Prince Fielder, $214,000,000 (2012-20)

11. Max Scherzer, $210,000,000 (2015-21) 

12. Zack Greinke, $206,500,000 (2016-21)

13. Derek Jeter, $189,000,000 (2001-10)

14. Joe Mauer, $184,000,000 (2011-18)
. . . Jason Heyward, $184,000,000 (2016-23)

16. Mark Teixeira, $180,000,000 (2009-16)
. . . Justin Verlander, $180,000,000 (2013-19)

18. Felix Hernandez, $175,000,000 (2013-19)
. . . Stephen Strasburg, $175,000,000 (2017-23)

20. Buster Posey, $167,000,000 (2013-21)

SportsOld Glory