According to reporters, Gase indicated Darnold could miss multiple weeks. The Jets have a bye in Week 4 after facing Patriots in Week 3. He could possibly return against the Eagles in Week 5.
The 22-year-old Darnold threw 175 yards and one touchdown in the Jets' Week 1 loss to the Bills. Darnold was selected at No. 3 overall in the 2018 NFL draft out of USC. In his rookie season, he went 239-for-414 with 2,865 yards with 17 touchdowns and 15 interceptions in 13 games.
The 27-year-old Siemian played at Northwestern and was drafted by the Broncos. In his three seasons with Denver, he went 495-for-835 with 5,686 yards and 30 touchdowns and 24 interceptions in 26 games. In 2018, he signed with the Vikings but saw no playing time. He signed a one-year deal with the Jets this offseason.