Niners sign Brett Swain

The 49ers held a Gong Show workout for receivers on Tuesday, and a former member of the defending Super Bowl champions won the check for $516.32. Matt Maiocco of CSNBayArea.com reports that the Niners signed former Packers wideout Brett Swain. Swain beat out T.J. Houshmandzadeh, Chris Chambers, Brian Finneran, Joe Hastings, and John Matthews for…