The 49ers can no longer disguise the obvious: Quarterback Colin Kaepernick is a talented but erratic player and can’t be depended on to lead them to postseason success.
On Sunday, Kaepernick had what is becoming a typical game against quality opponents, occasionally brilliant but often erratic.

The brilliance showed late in the second quarter when the 49ers drove for their only touchdown, with Kaepernick completing four key passes, the last a 13-yarder to Vernon Davis for the score.

The erratic element showed when the 49ers drove deep into Seattle territory in the third quarter and seemed poised to at least kick another field goal and possibly score their second touchdown — until Kaepernick threw an interception. So, the Niners came away with no points.

The game was won because Frank Gore broke loose for a 51-yard run in the closing minutes. Coach Jim Harbaugh didn’t risk another Kaepernick pass going to a Seattle defensive back so he called nothing but runs — one by Kaepernick — to let the clock run down before Phil Dawson’s go-ahead field goal.

Earlier this season, Kaepernick’s struggles were “explained” because his favorite receiver, Michael Crabtree, was sidelined by injury. But now, he has Crabtree, Davis, Anquan Boldin and Mario Manningham. Few teams can match that stable of quality receivers.

Certainly not Seattle. Golden Tate is the only Seahawks receiver who could make the active roster for the Niners, and he’d probably be used primarily as a kick returner.