Bills' backup QB upgraded on injury report, rookie DE lone non-participant

In this story:
The Buffalo Bills were near full strength at Thursday's practice with rookie defensive end Javon Solomon being the team's only non-participant.
Of the five players on the Bills' injury report, four were full participants with the focus squarely on preparing for the September 8 season opener against the Arizona Cardinals. The FP status was an upgrade for second-string quarterback Mitch Trubisky, who was limited on Wednesday.
Trubisky is battling back from an MCL sprain suffered during preseason game action. As the 30-year-old signal caller progresses, head coach Sean McDermott said the staff will "take it one day at a time with Mitch" prior to the week's first injury report being released.
Should Trubisky be unavailable for Sunday's game, the Bills can elevate veteran Mike White from the Practice Squad.
Rookie safety Cole Bishop, tight end Quintin Morris and veteran wide receiver Curtis Samuel all fully participated for the second day in a row and appear on track to play in the opener at Highmark Stadium.
The visiting Cardinals listed three players on Thursday's official injury report. Safety Joey Blount and wide receiver Xavier Weaver did not participate. The former is a new addition. Meanwhile, tight end Tip Reiman was limited for a second day.
The Bills will host the Cardinal on Sunday at 1:00 pm ET on CBS.
RELATED: Bills eliminate six captaincy positions, tab one 'C' on each side of ball
Official Injury Report (Week 1)
BILLS
Thursday
S Cole Bishop (shoulder) - FP
TE Quintin Morris (shoulder) - FP
WR Curtis Samuel (toe) - FP
DE Javon Solomon (oblique) - DNP
QB Mitch Trubisky (knee) - FP
Wednesday
S Cole Bishop (shoulder) - FP
TE Quintin Morris (shoulder) - FP
WR Curtis Samuel (toe) - FP
DE Javon Solomon (oblique) - DNP
QB Mitch Trubisky (knee) - LP
CARDINALS
Thursday
S Joey Blount (back) — DNP
WR Xavier Weaver (oblique) — DNP
TE Tip Reiman (ankle) — LP
Wednesday
WR Xavier Weaver (oblique) — DNP
TE Tip Reiman (ankle) — LP
— Enjoy free coverage of the Bills from Buffalo Bills on SI —
More Buffalo Bills News:

Ralph, a former college football conference administrator, brings 20+ years of media experience to Buffalo Bills ON SI. Prior to focusing on the Bills, he spent two years covering the New York Jets. Ventre initially joined the ON SI family in 2021, providing NCAA Football Championship Subdivision for NFL Draft Bible on FanNation. Ventre remains as an official voter for the Stats Perform FCS Top 25 and the annual legacy awards. The Fordham University graduate is a member of the Pro Football Writers of America.