Titans quarterback Marcus Mariota got his first real taste of NFL speed on Tuesday.During the first day of organized team activities, the rookie worked with the veterans for the first time.”It is definitely different. It is a lot faster, I think, compared to college,” Mariota said afterward. “Obviously this is my first day of practice with these guys, so just learning how to play at that tempo and at that speed. And being able to execute.”… This is the NFL, it’s the best of the best. The speed is so much faster. There’s so many great athletes.The Titans veterans also seemed impressed with Mariota, especially his speed. He connected on some nice throws downfield and took off on a few occasions during practice.

Source: Jim Wyatt of The Tennessean