 Complete the following phrase:  Pettitte was drafted by the Yankees organization in 1990, and he signed with them roughly a year later. After debuting in the major leagues in 1995, Pettitte finished third in voting for the American League AL Rookie of the Year Award. In 1996, he led the AL with 21 wins and was runner-up for the AL Cy Young Award. Two years later, he was the Yankees Opening Day starter. Pettitte established himself as one of the Core Four players who contributed to the Yankees late-1990s dynasty that produced four championships. Pettitte won the 