49ers grades for Brock Purdy’s career night in blowout Week 16 win vs. Colts

The 49ers on Monday night did what they had to do to keep their hopes of the No. 1 seed alive.The offense did most of the heavy lifting for the 49ers. After a rough start, the defense came through in the second half in the 49ers’ 48-27 victory over the Indianapolis Colts at Lucas Oil Stadium.The 49ers improved to 11-4 and moved into the No. 5 spot in the NFC playoffs with the victory. The 49ers and the Seattle Seahawks (12-3) control their own destinies for the No. 1 seed in the NFC.It could lead toward an epic Week 18 game at Levi’s Stadium between the 49ers and the Seahawks.But, first, the 49ers must defeat the Chicago Bears on Sunday and the Seahawks have to take care of business against the Carolina Panthers.Let’s look back at the 49ers’ victory in Indianapolis. Here is the report card from the 49ers’ Week 16 game against the Colts:Rushing offenseThe 49ers finally were able to get consistent yards on the ground, and it came against one of the better run defenses they’ve faced this season.Christian McCaffrey, who entered the game with a 3.6-yard average, found some nice room to run between the tackles. He put together his best game...