New York Giants wide receiver Darius Slayton, Indianapolis Colts wideout Josh Downs, and Houston Texans WR Christian Kirk are all receivers that could be solid waiver pickups for Week 5 in fantasy football.All three could see increased roles in their offenses based on recent occurrences in their games in Week 4, and all possess talent that's flashed at times, but hasn't turned into anything consistent in recent seasons.The situation a player is in is very important for fantasy football, though. ...