The Denver Broncos started rookie quarterback Drew Lock against the Los Angeles Chargers on Sunday and he helped lead the team to a 23-20 victory. Lock became the 50th starting QB in franchise history (1960-present).

Lock also became just the sixth rookie QB to win his debut in team history. The last QB to do that was Gary Kubiak in 1983. Before Kubiak, John Elway accomplished the same feat in 1983, three months earlier in the season.

Here’s the list of Denver’s rookie QBs who won their debuts:

Player Opponent Score Date Mickey Slaughter Patriots 14-10 9/29/63 Marlin Briscoe Bengals 10-7 10/6/68 Craig Penrose Chiefs 17-16 12/5/76 John Elway Steelers 14-10 9/4/83 Gary Kubiak Seahawks 38-27 11/20/83 Drew Lock Chargers 23-20 12/1/19

Lock wasn’t perfect in his debut (he had a bad interception) but the good seemingly outweighed the bad (he tossed two touchdown passes). After Sunday’s win, Broncos coach Vic Fangio indicated that the QB had a mostly positive debut but still has areas to work on.

“I think there’s promise there,” Fangio said. “I really do. I’m just not ready to put him in Canton yet. I think it was a great start for him, something that he can build upon . . . . there’s still a lot of room for improvement.”

Lock will start again against the Houston Texans on the road in Week 14.