49ers Training Camp and NFL Preseason

49ers training camp underway in Santa Clara; open practices available for fans to attend. Preseason games start soon. Matt Maiocco's first 53-man roster projection: Kittle (Achilles) and Mykel Williams (knee) on PUP, Pearsall out for season, Samuel re-signed, injuries piling up on DL. Key storylines: QB competition, rookie development, roster battles.