"CC Sabathia agreed to a contract extension Monday and will be staying with the Yankees.

"Yankee fans, I'll be here fighting for number 28 next year," the pitcher announced on his Twitter account, referring to the team's next World Series championship.

The new contract is for five years, $122 million guaranteed, with the potential to become six years worth $142 million.

The 31-year-old left-hander had until midnight to decide if he would opt out of the remaining four years and $92 million on his previous contract."