The 49ers are adding Daunte Culpepper to their quarterback mix.

After a three-hour practice Sunday, San Francisco coach Jim Harbaugh said the team is bringing in the 34-year-old Culpepper for a tryout on Monday.

"We're going to have Daunte in for a workout and kick the tires," Harbaugh said. "I'm looking forward to that."

Harbaugh said Saturday that the 49ers have no clear-cut starter at quarterback after veteran Alex Smith and rookie Colin Kaepernick both had shaky performances in San Francisco's 24-3 loss to New Orleans in Friday's preseason opener.

Culpepper, the No. 11 pick in the 1999 draft, hasn't played in the NFL since an eight-game stint with Detroit in 2009. During an 11-year NFL career, mostly with the Minnesota Vikings, Culpepper has played in three Pro Bowls. He spent last season with the Sacramento Mountain Lions of the United Football League.

Smith and Kaepernick alternated most of the snaps Sunday during 11-on-11 drills in front of 8,200 fans at Candlestick Park. The 49ers were practicing on their home field as part of a full day of "Fan Fest" activities.