There aren't many feel-good stories in a 4-12 year, but here was one from the 49ers' 2018 season: The bookends of their offensive line became best buddies. It didn't take long for rookie right tackle Mike McGlinchey, 23, and left tackle Joe Staley, 34, to click as their "bromance" was a running joke long before training camp. In fact, the bond between the hyper-competitive goofballs might have been sealed in the spring when they were captured on video singing a Backstreet Boys hit at a karaoke bar. (They also sang together at a charity dinner, for a show on the team's website ...