AT COLORADO: This Season (Jr.)-Enters the fall atop the depth at the right defensive end spot, a position CU coaches also refer to as the "jack" outside linebacker position.  He enters his junior year with nine career quarterback sacks, tied for 38th all-time at Colorado.  He really got after it in the weight room after his sophomore season, coming in twice a day, three days a week and strength coach Malcolm Blacken said he had a focus that was clear and contagious throughout the team.  He has only 10 percent body fat, and in spring testing, owned a vertical jump just over 36 inches, benched 225 pounds 22 times and ran a 4.5 40-yard dash.

2011 (Soph.)-He played in all 13 games, including six starts, the first three of the year at right defensive end and three on the left side (middle of the year, game seven through nine).  In playing 405 snaps for the season, he had 18 tackles - all solo stops, which proved to be a school best for the most solo tackles without an assist, topping cornerback Gardner McKay's 16 solo stops and no assists in 2007.  He recorded the second most sacks - 5½, for 37 yards in losses, and had eight tackles at or behind the line of scrimmage (seven for losses, one for zero).  He had two third down stops, three caused fumbles, three hurries and a quarterback chasedown (near sack); the three forced fumbles were the most by a CU player since 2003, when Clyde Surrell also had three.  He had a career-high five tackles (obviously all unassisted) at Washington, which included a quarterback sack; he had three twice, at Hawai'i (with one-and-a-half sacks and a forced fumble) and at Arizona State (which included a sack).  He suffered a fractured toe in winter conditioning that required surgery to insert a pin; it was removed a week into spring drills, thus he saw limited action.  He recorded six tackles, one for a third down stop, in spring scrimmage action.

2010 (Fr.)-He played in all 12 games, including one start, which came on the road at Kansas.  He was in for 148 snaps from scrimmage, recording 11 tackles; eight of those were of the solo variety including three-and-a-half sacks, tied for the fourth-most on the team.  He was often in the right place at the right time, with almost half of his tackles (5) going for third down stops, tying for sixth-most on the team, but everyone ahead and/or tied with him played at least 183 more snaps.  He also had two other stops for zero gain, giving him seven tackles at or behind the line of scrimmage.  He also had a quarterback chasedown (near-sack) and a forced fumble, the latter coming at Missouri.  His first career tackle was for a sack against Colorado State in the season opener, with his season-high in tackles being two at Missouri and at Kansas.  He was one of just seven true freshmen to play for the Buffs in the 2010 season.

HIGH SCHOOL-He earned All-Region honors from PrepStar and is ranked the No. 37 weak side defensive end by Rivals.com, the No. 102 defensive end by Scout.com and No. 114 defensive end by ESPN.  He only played football for two years and he earned a spot in the starting lineup by the second half of his junior season.  He earned second-team All-Big VIII league and was named his team's most valuable linebacker his senior year when he had 69 tackles, 7½ sacks, two forced fumbles and three pass break-ups.  He also saw action at tight end and caught eight passes for 120 yards and two touchdowns.  He had two catches for 64 yards including a 59-yard touchdown in a 34-3 win over Chino and he also scored a touchdown against Poly with two grabs for 16 yards.  Defensively, he had four games with double-figure tackle totals with a high of 11 coming in the season's last game against Centennial with nine of those 11 solo tackles.  Against Santiago, he had eight tackles and two sacks and against Roosevelt he had 13 tackles, a sack and a forced fumble.  As a junior, he totaled 20 tackles, including 12 against Roosevelt in his first-ever start.  Corona was 2-8 his senior year and 4-6 his junior season under coach John Brandon.  He lettered three times in basketball and was the team's MVP; he won a team award for taking the most charges his junior season.  He also participated in track and field (high jump, discus). 

ACADEMICS-He is majoring in Political Science at Colorado.   

PERSONAL-He was born May 30, 1992 in Long Beach, Calif.  His hobbies include video games, working out and hanging out with friends. His cousin is Osi Umenyiora, who was the second round choice of the New York Giants in the 2003 NFL Draft, has two Pro Bowl appearances to his credit and was member of the 2008 Super Bowl championship team. His cousin, Charles Saseum, is a sophomore sprinter on the Cal-Berkeley track team.  Nickname is "Yung Hamlet." (Name is pronounced chee-dera u-zo da-ree-bay).