Ingram, a South Carolina product taken with the 18th overall pick, will have an option for a fifth year, according to the website.
Wyche: AFC divisional challengers
Center David Molk, taken out of Michigan in the seventh round with the 226th overall pick, signed a four-year contract with San Diego.
"I consider this a part of luck," Smith told UT-San Diego, "because when I see what I consider a bonus pick, outside our cluster, it's luck. He's a mean, nasty man, extremely physical with a great motor."