Cox's 27-point performance included a crucial corner 3-pointer with 48 seconds left that gave Purdue a 68-66 lead. The No. 14 Boilermakers had to rally in the final minute after a slow start.
Trey Kaufman-Renn contributed 11 points and 10 rebounds, while Purdue committed several turnovers that led to Northwestern points. The win helps Purdue bounce back after their recent struggles on defense.