1. Seneca's debut. Recently signed veteran quarterback Seneca Wallace is scheduled to make his 49ers debut as a candidate for the No. 2 job. Will he provide an attractive alternative to Colt McCoy, Scott Tolzien and rookie B.J. Daniels? Wallace has little time to learn the 49ers' offense. However, the system does overlap with the one Wallace, 33, ran for years while playing for Mike Holmgren and the Seattle Seahawks. "Zebra" is 11 personnel, "Tiger" is 12 personnel, "Eagle" means four wide receivers and so on. Perhaps that will help Wallace make the transition.
2. Kaepernick's reps. Starting quarterback Colin Kaepernick has attempted six passes in the 49ers' first two exhibition games. The other NFC West starters have attempted between 35 and 44 passes through three games. Coach Jim Harbaugh has indicated Kaepernick doesn't really need the reps. He has also said he limits reps based on feel and has limited Kaepernick to guard against something "freakish" happening, an apparent allusion to injury. Those fears appear justified now that the 49ers do not have an appealing backup quarterback, a big change from last season. The 49ers' starter at this point last season, Alex Smith, attempted 19 passes in four 2012 exhibition games, also a low number. Kaepernick attempted 39 as the backup.
3. Baldwin's impact. Recently acquired wide receiver Jon Baldwin is scheduled to make his 49ers debut. The team will be watching to see how Baldwin and the other unestablished wide receivers perform. Baldwin, acquired from Kansas City in the A.J. Jenkins trade, had no receptions in the Chiefs' first two exhibition games. He dropped one pass against San Francisco on Aug. 16.