What we learned: Broncos 30, Cardinals 2

Find out what we learned in the Broncos' final preseason victory.

DENVER -- The Broncos wrapped up their first undefeated preseason in 12 years with a 30-2 rout of the Arizona Cardinals on Thursday night at Sports Authority Field at Mile High.

What did we learn from the game?

Denver's offense struggled early; its first four possessions yielded a field goal, one first down and 12 yards on 13 snaps. Sloter was sacked twice -- once for a safety, and on the second sack, he was brought down at the Denver 1-yard line, ending the Broncos' fourth series.

But on the next possession, the offense began to click. Sloter completed back-to-back 32-yard passes to open the next series, finding Jordan Taylor on…