This game's a real back-and-forth game. The Bucs took the lead with a field goal on their first drive, but the Atlanta Falcons came right back with an 80-yard pass play to Julio Jones. Yep.
Undrafted rookie Leonard Johnson couldn't handle Jones on a go route, and then missed the tackle too. That was fairly similar to the 80-yard Danario Alexander touchdown the Bucs gave up against the Chargers. The issue there wasn't a go route, but a slant pass - but Leonard Johnson failed to secure a tackle and turned a decent game into an obscenely long touchdown.
The Bucs can't give up those kinds of plays and expect to consistently stop offenses.