Pettitte, 40, decided in the last couple of days that he would rejoin the Yankees for his 18th Major League Baseball season, while the team is optimistic it will have a deal with 42-year-old relief pitcher Mariano Rivera by the end of the week, the website said without citing a source.
Pettitte, who retired for the 2011 season, returned this year and went 5-4 with a 2.87 earned run average, pitching his first game on May 13 and missing more than two months of the campaign after being hit on the ankle by a ball in late June.
Other than a 2004-06 stint with the Houston Astros, Pettitte has played his entire career in New York, posting a 245-142 record with a 3.86 ERA. His win total is 51st all-time and second among active pitchers behind 50-year-old Jamie Moyer, with 269.
Rivera, whose 608 saves are the most in major-league history, missed most of last season after tearing a knee ligament while catching fly balls during a May practice. He hinted during 2011 spring training that the season might be his last, though after the injury he vowed to return.
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