Kelley carried the ball four times for nine yards and caught his only target for five yards in Sunday's preseason loss to the Saints.
The fourth-year back got the first two touches of the night for the Chargers, but Kelley wound up being thoroughly outplayed by Isaiah Spiller, who averaged 5.4 yards per carry on his five totes. The duo could continue jockeying for the No. 2 spot on the depth chart behind Austin Ekeler right up until the Week 1 kickoff, but even if Kelley loses that battle, his ability to contribute on special teams might be enough to keep him on the roster.