Trevor Siemian stars as Denver Broncos continue perfect start

Super Bowl champions the Denver Broncos continued their perfect start to the season with a 29-17 victory at the Cincinnati Bengals.

Second-year quarterback Trevor Siemian threw four touchdown passes in his best return since taking over the starting role from Peyton Manning.

Siemian threw a pair of touchdowns to Emmanuel Sanders in the second quarter before a career-long 55-yarder to Demaryius Thomas to cap his best display under centre.