Why refs reversed Rams' fumble recovery in game-changing decision

Key points

• Officials reversed an on-field ruling that the Los Angeles Rams had recovered a fumble by James Cook during Monday Night Football. After a brief discussion, the officials awarded the ball to the Buffalo Bills, without a video review.
• Replay footage of the scramble for the ball did not clearly show who had recovered it. The decision gave Buffalo possession, and the Bills then scored six points to regain the lead.
• The change confused many fans.