The road to succe s in the NFL begins each year with the hard work and wide-open po sibilities of training camp. As teams around the league gear up for the 2015 campaign, NFL Media reporters will be checking in from . For our next stop, Ian Rapoport visits the .Where is NFL Media?The stay home, hosting training camp at Saint Thomas Sports Park in Nashville. But this one had a markedly different feel to it, thanks to the inclusion of . There were no parking spaces left at the facility. Fans slammed the fence along the field, fighting to see. Times are changing in Tenne see.Observations1) Let's start with the man everyone came to see. Rookie still hasn't thrown an interception in training camp, though the team has joked (or not) about having him throw one just to get it over with and have all of us stop talking about it. Make no mistake: Mariota is for real, already years ahead of where they thought he would be. Rookies aren't supposed to come in and adapt and be the leader before a game is played. But thanks to his magnetic ways, players have been drawn to him. It's already his team. Maybe the Oregon offense was more complicated than we thought, because Mariota has picked up Tenne see's offense in no time. There is no fast-forward button, but the have hit the NFL's closest thing.2) We have all focused so much on the quarterback, it's easy to forget Mariota has some targets to throw Valente Bellozo Jersey to. Actually, he has a wide array of them. has the skills, and perhaps this is when he puts it all together, provided he doesn't end up facing discipline stemming from . The nifty has had a strong camp, while has flashed newfound burst and tight end is always dangerous. The wild card is rookie , who is ... huge. Just ma sive. Couldn't believe how big he is. Consistency has been his i sue, and he has yet to put two practices together. But when he's on -- like he was Thursday -- it's something to watch.3) Coach Ken Whisenhunt performed a tricky maneuver this offseason, one that could've caused ripples on his staff. to run his defense over current coordinator Ray Horton. It seems like it would be a recipe for jealousy, replacing the man running the defense but keeping him on staff. Yet, it hasn't been like that at all in Tenne see. Horton signed off on the move, welcoming his old mentor, who was responsible for drafting him with the back in 1983. The base look will remain the same, but the have blended the ideas of the two men to build a more cohesive unit. With so much young talent, LeBeau's wisdom will help.New additions, LB: Orakpo battled injuries during his time in Washington, last season, and he needed to leave to secure the big-time contract he desired. If he can stay healthy, he can be the elite pa s-rusher the need up front. Tenne see took it easy on Orakpo (chest) in OTAs and minicamp, but he's been full-go in camp. What they want is for him to return to the form that saw him collect 10 sacks in 2013., WR: Cast aside by the and , Nicks is still out to show he's a top receiver deserving a big payday. With a so-far flawle s rookie in Mariota, maybe this is Nicks' chance. Word is, he can run as he hasn't in a few years, and Tenne see doesn't really care what he did before he got here. If he can emerge, the will have stolen a playmaker.Overheard"I mean, who is ever going to complain about that?" -- Ken Whisenhunt, discu sing Mariota's interception-le s streak through seven practices. It's actually not the team's favorite topic ... but a much worse topic would be a rookie who can't stop throwing picks.Extra points It seemed like an odd pick a year ago, but the ' scouts may have known what they were doing with left tackle , who the team selected 11th overall in 2014. No one is talking about him, but he could be a er this year. That's how good he is. Could Tenne see have secured a franchise quarterback and a franchise left tackle in back-to-back drafts? Cornerback and safety quietly signed this offseason, completely remaking the ' secondary. They may be all that was needed. Taking a fullback in the draft is something teams simply don't do. But Tenne see did it with Alabama's in the fourth round, securing a bodyguard for their backs. He could turn into a short-yardage back, as well, making him an important selection for the team and running backs coach Sylvester Croom.Follow Ian Rapoport on Twitter . Erik Gonzalez Jersey