From a 2006 article in the NY Post:
Q: Why did you want to do less SportsCenter anchoring?
A: I've been there 13 years. For several years, it's been no secret that I've wanted to do more assignments. I wanted to have more balance. While I have a family- a husband and two kids- it's important to be (A) challenged and (B) grow professionally and mix that up with family life. To do that, you have to unlock the handcuffs for me on the SportsCenter set. The handcuffs were locked for many years and they had the key.
I hope that helps. If it does, please click the ACCEPT button and please condiser leaving positive feedback. I will do the same.