Signing day: Biographies of 2012 BYU Cougars football recruiting class

PROVO — It's been a busy morning on National Signing Day for BYU.

The Cougars have secured a handful of national letters of intent, with defensive lineman Marques Johnson, an El Camino Junior College transfer, being the first to sign. Among the other first signees included the three quarterbacks that are also part of this class: Tanner Mangum, Taysom Hill and Ammon Olsen.

The following players have officially signed with BYU (this list will be updated throughout the day):

Tanner Mangum

Quarterback

6-3, 195

Eagle, Idaho

Eagle HS

Rated No. 1 prospect in the state of Idaho, No. 3 overall quarterback in the nation and No. 59 overall prospect by Rivals.com ... rated No. 15 quarterback by Scout.com ... Co-MVP of Elite 11 Camp ... MVP of the Under Armour All-America Game ... participated in The Opening, a five-day Nike football event and was named to the 7on7 All-Tournament team after leading his squad to the championship game ... 5A Southern Idaho Conference Offensive Player of the Year ... All-State ... completed a school-record 268 of 393 passes for 3,885 yards and 35 touchdowns as a senior ... set a single-game school record completing 37 of 53 passes for 469 yards and six touchdowns ... threw for 874 yards and 10 touchdowns before missing most of his junior year with a an injury ... Academic All-Conference all of high school ... ESPN lists him as "an efficient, technically consistent pocket passer that is an above average athlete as well" ... older brother, Parker, also played football at BYU while sister, Meredith, played soccer at Boise State ... also recruited by Arkansas, Boise State, Oregon, Oregon State, Stanford, Utah and Washington State ... coached by Paul Peterson

Phillip Amone

Linebacker

6-0, 230

Orlando, FL

Dr. Phillips High School

2011 All-Metro West Conference ... team captain and defensive MVP ... had 50 tackles in four games, including a season-high 16 tackles in the third game of the season before tearing his ACL in October of his senior year ... as a junior totaled 128 tackles, 5 sacks and an interception ... led high school team to 45-4 record in career ... helped school win 36-straight regular-season games ... in state title game junior season ... principal's honor roll ... National Honors Society ... has seven brothers and sisters ... also recruited by Florida Atlantic, Duke, Miami, North Carolina, Georgia Tech, Purdue, Indiana and Wisconsin ... coached by Rodney Wells

Marques Johnson

Defensive Lineman

6-2, 310

Los Angeles, Calif.

El Camino CC

*mid-year enrollee

First-team All-League, Second-team All-City ... Team captain and lineman of the year ... led El Camino to a No. 2 ranking in sacks (38), pass defense (176.5 ypg) and scoring defense (19 ppg) and No. 3 in total defense (288.5 ypg) ... recorded a team-high 14.5 tackles for loss for minus-38 yards, four sacks, forced one fumble and recovered one fumble ... earned Scholar Baller Award ... has three brothers and sisters ... also recruited by Indiana, Washington State and Texas Tech ... coached by Ruffin Patterson

Ammon Olsen

Quarterback

6-3, 198