What we learned about Lance, Darnold in 49ers’ preseason loss

BOX SCORE Following two days of joint practices that amounted to one full game of work, the 49ers' starters stepped aside Sunday. The 49ers' preseason opener against the Las Vegas Raiders at Allegiant Stadium afforded the backups and bottom half of the roster to audition for openings on the 53-man roster and practice squad. None of the 49ers' projected starters on either side of the ball suited up in their 34-7 blowout loss to the Raiders. Likewise, Las Vegas did not suit up Jimmy Garoppolo or any of its notable players. In other words, save your sweeping statements about the team — good or bad — for another day. The first takeaway is that the 49ers who suited up for Sunday's game largely will be former 49ers when cuts are made on Aug. 29. Here are the other takeaways from Sunday's showing: Lance, Darnold competition Starter Brock Purdy experienced his share of successes and failures on the practice field while taking 66 snaps of 11-on-11 action during practices Thursday and Friday. Purdy made a handful of top-notch throws in Friday's practice. He also had an equal number of interceptions and near-interceptions against the Raiders' first-team defense. With Purdy's work for the...