"I first reached the Majors at age 22, although only in a limited role. Although I hit well in the minors, I never got a full chance in the Major Leagues until I was 29 years old. At age 29, I finally got to play, and I hit .338 with 21 homers in my first full season, making a lot of people look stupid. I hit over .300 twice more, hit 27 homers at age 33, and even .302 at age 35. I could have been a star if I had gotten a chance to play in the Show at a younger age. Who am I?"