Complex sentence: She was then made the favorite for the 2016 Kentucky Oaks, the same race won by her dam by over 20 lengths, and ran close to the pace before fading to sixth.
Split into simpler sentences: She was then made the favorite for the 2016 Kentucky Oaks, the same race won by her dam by over 20 lengths. Rachel's Valentina ran close to the pace before fading to sixth.