I want to know the answer to the following question:
Who was rookie of the year Runner-Up in 1989?
All the background I'm provided with is that "In 1989, the first full season with night baseball at Wrigley Field, Don Zimmer's Cubs were led by a core group of veterans in Ryne Sandberg, Rick Sutcliffe and Andre Dawson, who were boosted by a crop of youngsters such as Mark Grace, Shawon Dunston, Greg Maddux, Rookie of the Year Jerome Walton, and Rookie of the Year Runner-Up Dwight Smith.". Is that enough to answer the question?
Answer: yes