Denver Broncos defensive end Derek Wolfe has been suspended for the first four games of the 2015 regular season for violating the NFL policy on performance enhancing substances. Wolfe said in a statement that he took something that wasn't performance-enhancing. "Please allow me to offer my most sincere apology to everyone in the Broncos organization, and especially to my teammates and our fans," Wolfe said. "During the off-season I took a medication which is on the banned substance list. The medication is not a substance which would enhance my on field performance in any way and I genuinely was unaware that it was prohibited, but players are responsible for what is in their bodies. "I will certainly exercise far greater caution in the future and will seek advice relating to the permissibility of any and all medications. I’m very disappointed that I can’t help my team for the first four weeks of the season, but I look forward to a great season with the Broncos and can't wait to get back on the field in week five.” Follow me on Twitter: @RavensInsider Aaron Wilson covers the Ravens for The Baltimore Sun