Evening Denver and Oakland notes

Posted by ESPN.com's Bill Williamson

The Broncos signed their third draft pick in less than 24 hours Thursday by agreeing to terms with guard Seth Olsen. He was taken in the fourth round from Iowa.

Denver now has four of its 10 draft picks signed. First-round picks Knowshon Moreno and Robert Ayers are among the unsigned. Denver's rookies start practice Monday. Denver cut rookie free agent receiver David Grimes on Thursday.

Meanwhile, the Raiders have released information on their first few days of training camp. I am planning on being at Napa for the kickoff of the Raiders' new season.