Early years

Allen played football for the Pop Warner Little Scholars. He was part of the SE Region, Peace River Conference and played with the Cape Coral High School Seahawks. Allen attended Cape Coral High School, where he played quarterback and threw for more than 5,000 career yards. He was a three-time all-area player and Class 5A honorable mention all-state as a junior and senior. Also an accomplished basketball player, he averaged 15.3 points, 6.6 rebounds and 2.9 steals in 2005-2006 and was named 2nd Team All-Area. He was also a letterman in track.

Considered a two-star recruit by Rivals.com, Allen was not ranked among the nation's best football prospects. He drew little attention from colleges and selected South Florida over Eastern Kentucky and Eastern Michigan.

College career

As a true freshman, Allen played in nine of USF's 13 games, missing four mid-year games due to a quadriceps injury. He was used as a situational backup in the secondary and also on special teams.

Becoming a full-time starter as sophomore, Allen had a breakout year, recording 84 tackles (fourth on the team), four interceptions, three fumble recoveries, 47 fumble return yards and one touchdown. He was named Nagurski National Defensive Player of the Week after forcing a fumble, recovering a fumble and intercepting a pass in Bulls’ win at No. 17 Auburn.

A preseason Thorpe Award candidate in 2008, Allen finished the season fifth on the team with 53 tackles, while having two tackles for loss, one sack and one interception.

Professional career

Pre-draft

Allen was considered one of the best safety prospects available for the 2010 NFL Draft.

Pre-draft measurables

Ht	Wt	40-yd dash	10-yd split	20-yd split	20-ss	3-cone	Vert	Broad	BP
6 ft 1 in	207 lb				4.30 s	6.96 s	34½ in	9 ft 6 in	16 reps

Philadelphia Eagles

Allen was drafted by the Philadelphia Eagles in the second round (37th overall) in the 2010 NFL Draft. After Marlin Jackson suffered an Achilles tendon rupture during organized team activities, Allen was named the starting free safety going into training camp, replacing the 2009 starter, Sean Jones. Allen was signed to a four-year contract on July 27, 2010.

Allen recorded his first NFL Interception against the Green Bay Packers in week 1 of the 2010 season and he recorded his second interception week 2 against the Detroit Lions. He was named the NFL Defensive Rookie of the Month for the month of September. He was placed on injured reserve on December 21 due to a torn patellar tendon.

Allen entered free agency after the 2013 season. He re-signed with the Eagles on a one-year deal. Entering 2014, Allen is listed as a starter at safety opposite Malcolm Jenkins.

Oakland Raiders

Allen signed with the Oakland Raiders on March 12, 2015. Allen suffered a torn MCL in a loss to the Cincinnati Bengals on September 13, 2015. After an impressive preseason where he only allowed 1 catch on 5 targets, he played only 5 games in the regular season, totalling 11 tackles and 1 interception. He was released by the Raiders on February 9, 2016. Allen was re-signed by the Raiders on February 11, 2016.

Career stats

Year	Team	GP	COMB	TOTAL	AST	SACK	FF	FR	FR YDS	INT	IR YDS	AVG IR	LNG	TD	PD
2010	PHI	13	48	42	6	2.0	1	0	0	3	27	9	16	0	8
2011	PHI	15	59	46	13	0.0	0	0	0	2	44	22	31	0	7
2012	PHI	15	73	60	13	0.0	0	0	0	0	0	0	0	0	4
2013	PHI	16	82	59	23	1.0	1	0	0	1	43	43	43	0	6
2014	PHI	15	62	51	11	1.0	1	3	25	4	45	11	40	0	5
2015	OAK	5	11	7	4	0	0	0	0	1	5	5	5	0	2
Career		74	335	265	70	4.0	3	3	25	10	164	15	43	0	31

Key

• GP: games played
• COMB: combined tackles
• TOTAL: total tackles
• AST: assisted tackles
• SACK: sacks
• FF: forced fumbles
• FR: fumble recoveries
• FR YDS: fumble return yards
• INT: interceptions
• IR YDS: interception return yards
• AVG IR: average interception return
• LNG: longest interception return
• TD: interceptions returned for touchdown
• PD: passes defensed

[ Source: Wikipedia ]