Rosier is a 6-foot-1, 197-pound three-star quarterback. Arkansas State, Furman, Louisiana-Lafayette, Middle Tennessee, Northern Illinois, Southern Miss and Western Kentucky were his other scholarship offers. Alabama, Auburn, Cincinnati, Duke, Kentucky and South Carolina expressed interest.
"I really like Miami, and my mom really likes Miami," he told the Press-Register. "We kind of sat down and she said, 'If you like them, what is really the point in waiting any longer?' That made sense to me so I went ahead and committed."
Last fall, Rosier completed 169 of 305 attempts for 2,238 yards and 20 touchdowns and rushed for 1,002 yards and 12 more scores.
This spring, he displayed impressive athleticism at a Nike event, including an electronically-timed 4.69 40-yard dash, 4.54 20-yard shuttle, 33.4-inch vertical, 37-foot power throw and 81.57 SPARQ.
He's also Faith Academy's catcher on the baseball team, where he hit over .400 as a junior and has received interest from SEC and ACC programs.
The 6-foot-1, 183-pound Mayes selected the Hurricanes over a scholarship offer from Syracuse. He joins high school teammate Michael Smith, a three-star outside linebacker on the Miami's commit list.
Seven 2014 prospects have announced for Miami since Friday.