As Alex Smith stood on the sideline with a concussion, San Francisco's potential quarterback of the future went to work - and fast. Strong-armed fill-in Colin Kaepernick made all the right throws, looking every bit a capable NFL No. 1 as the 49ers whipped the Chicago Bears 32-7 in a Monday night NFC showdown at Candlestick Park that quickly turned into a lopsided rout for the home team.