24/7 News Source - The NFL is suspending Denver Broncos wide receiver Wes Welker four games for violation of the league's policy against performance-enhancing drugs.

Pro Football Talk reports Welker took a Molly that was cut with amphetamines while at the Kentucky Derby. He tested positive for the PED and lost his appeal, which took place two weeks ago.

He will not be permitted to practice with the team during the suspension.

The 33-year-old will be eligible to return in Week Six as the Broncos have a bye week in Week Four.

Welker returned to the practice field Monday as he continues through the NFL's concussion protocol after he suffered his third concussion since November 17th during the preseason.

He hauled in 73 passes for 778 yards and 10 touchdowns during his first season in Denver in 2013.