Okay, I admit I cheated and looked it up on google, so my answer doesn't count because I didn't know. So here it is in a spoiler. If it's wrong, then so is Wikipedia. If anyone actually knows this I will be in awe!
Warning, Spoiler:
Vida Blue... a pitcher, who'd have guessed?
Yep. One of my favorite baseball trivia questions. This happened before the DH. Also, you have to limit the question to the AL because Pete Rose won the NL MVP a couple of years after Vida Blue.