CLEVELAND, OHIO-- Joe Haden's 2015 season was shrouded in mystery.
The enigma, now, has became a bit more clear.
On Friday, the Browns announced that Haden underwent ankle surgery on Wednesday of this week, but is expected to be ready for the 2016 season and is expected to resume football activity during training camp.
The team indicated that Haden injured his ankle amidst Cleveland's week-eight loss to the Arizona Cardinals.
The ankle injury, previously undisclosed, came in addition to multiple concussions, a finger injury and a rib injury that hampered Haden in 2015.
The slew of injuries forced the two-time Pro Bowler to be inactive for eight games last season, while he started in just five contests.
Placed on injured reserve on December 24, 2015 after failing to clear the NFL's concussion protocol, Haden was finally able to pass the tests associated with the protocol and was cleared on January 12.
Haden, who was drafted by Cleveland with the seventh overall selection in the 2010 NFL Draft, is set to enter his seventh season for the Browns in 2016.
For all of your Browns news and updates from Berea, follow Hayden Grove on Twitter: @H_Grove.