Billy Cundiff, sporting a crisp new white No. 6 jersey, had an impressive first day of practice with the 49ers while kicking alongside struggling veteran David Akers as coach Jim Harbaugh closely watched. Cundiff signed a one-year contract with the NFC West champion Niners to compete with Akers as Harbaugh and his staff determine who will handle the kicking duties for the Niners in the playoffs.