They both came up together as rookies with the Yankees in the 1995 season.
Both of them have been known as members of the "Core Four," and there's a good chance that the 2013 season could be the final season for both Andy Pettitte and Mariano Rivera.
Pettitte shocked all of baseball when he decided to come out of retirement and pitch for the Yankees in 2012.
The 40-year-old was pitching very well before suffering a fractured ankle, which took almost three months to recover from. Despite the injury, Pettitte finished with a 5-4 record with a 2.87 ERA.
Pettitte also decided to come back for one more season, signing for a one-year, $12 million deal for 2013.
Which leaves Rivera, who everyone expected to retire after 2012.
A torn ACL in May ended Rivera's 2012 campaign, and he didn't want to end his Hall of Fame career on an injury, which is why he resigned for a one-year, $10 million deal for 2013.
At ages 41 and 43 respectively, Pettitte and Rivera could be playing in perhaps their final season together as teammates on the Yankees.
Both have won five World Series together and really have nothing left to prove except for playing for the love of the game and for the chance of one more championship.
I honestly don't see Pettitte and Rivera playing past this season, and if this in fact the last season they are playing together, then fans need to soak up every single moment that they see No. 42 and 46 in pinstripes.