What we learned about 49ers in thrilling preseason win vs. Broncos

BOX SCORE SANTA CLARA — The 49ers showed a slice of their regular-season offense for 5 minutes, 45 seconds on Saturday night. While running back Christian McCaffrey, tight end George Kittle and left tackle Trent Williams were not on the field when the 49ers lined up against the Denver Broncos in a preseason game at Levi's Stadium, starting quarterback Brock Purdy and his three top wide receivers were together again for an opening drive that covered 68 yards on nine plays. Trey Lance led the 49ers on three late scoring drives, and rookie kicker Jake Moody barely snuck a 32-yarder inside the right upright as time expired for a 21-20 win over the Broncos. Purdy showed that he is ready for the 49ers' regular-season opener against the Pittsburgh Steelers on Sunday, Sept. 10, as he completed four of five pass attempts for 65 yards. Deebo Samuel caught two passes for 39 yards, while Brandon Aiyuk had one catch for 15 yards and Jauan Jennings added an 11-yard reception. After Purdy's one-series stint, the focus turned to the true quarterback competition - the one for the backup job. Here are three takeaways from the second of three 49ers preseason games: Darnold vs. Lance for No. 2...