Nice going Jack. This was a nice quiz but as hmlyons25 said, every time you type in a team, every time that team won appears on the screen. What you need to do is edit your quiz. First press "Create Quiz". Then you can edit your quiz or make a new one. Find "MLB world series winners" and click "edit". Then click on the drop down that says "more options". There will be a box you can click on that says " User answers must correspond to yellow box". Once you click it, press "Save Quiz and then go to " Step 6 - Submit and click "Resubmit Quiz". Now, when somebody plays your quiz, they have to answer each question at a time so that they'll have to write the Yankees 27 times. Also you should include the city name in the answer. Good luck!
Other than needing to be updated, the only real issue is making people have to type the Senators and Americans as answers when they were the Twins and Red Sox, respectively, before they changed their name. Still the same teams though.
http://www.jetpunk.com/user-quizzes/210875/world-series-winners-all-time
it is actually good