Trevor Siemian will start on Saturday

Coach Gary Kubiak named Trevor Siemian the starting quarterback for the Broncos’ third preseason game and said he will decide next week on the starter for the season opener.

Kubiak said Siemian, Mark Sanchez and rookie Paxton Lynch will play an equal amount Saturday against the Los Angeles Rams.

Siemian and Sanchez ended training camp sharing the No. 1 quarterback spot on the team depth chart but neither has separated from the other to claim the job outright. Both struggled with turnovers in Saturday’s 31-24 loss to San Francisco.

The Broncos traded for Sanchez after Peyton Manning retired and Brock Osweiler signed with Houston. Sanchez is the only quarterback on the staff with meaningful regular season experience.

Siemian is expected to start despite a sore shoulder. Kubiak said he expects Siemian to practice Tuesday.