Early years

Arenas was born in Tampa, Florida. He attended Robinson High School in Tampa, where he was a first-team All-Suncoast selection in football and a track star. In high school football, he was a highly regarded punt returner and defensive back. He was named USA Navy Player of the Week and Bright House Player of the Week in 2005. He set the record for most punt and kick returns for touchdowns at Robinson as a senior, with four punt-return touchdowns and three kickoff returns for scores, scoring 16 touchdowns overall.

In track & field, Arenas was an standout sprinter, competing in the 200-meter dash, with a personal-best time of 22.9 seconds, and in the 400-meter dash, with a personal-best time of 51.48 seconds. He was also a member of the Knights relay teams, running PR of 42.9 seconds in the 4 × 100m, 1:32.31 minutes in the 4 × 200m and 3:30.08 minutes in the 4 × 400m.

Regarded as a three-star recruit by Rivals, Arenas chose Alabama over Florida Atlantic.

College career

Arenas attended the University of Alabama, where he played for coaches Mike Shula, Joe Kines, and Nick Saban from 2006 to 2009. On November 21, 2009, Javier broke Derek Abney's Southeastern Conference (SEC) record for career punt return touchdowns by returning his seventh punt return for a touchdown against the University of Tennessee-Chattanooga in Bryant-Denny Stadium. Following his senior season, he was a first-team All-SEC selection and was recognized as a consensus first-team All-American. The 2009 Crimson Tide completed an undefeated 14-0 season, beat the Florida Gators 32-13 to win the 2009 SEC Championship Game, and then defeated the Texas Longhorns 37-21 to win the 2010 BCS National Championship.

Arenas left Alabama with 1,752 punt return yards and 2,166 kickoff return yards, both school records, along with his career average of 14 yards per punt return.

Professional career

Pre-draft measurables

Ht	Wt	40-yd dash	10-yd split	20-yd split	20-ss	3-cone	Vert	Broad	BP
5 ft 9 in	197 lb	4.60 s	1.55 s	2.61 s				9 ft 4 in

Kansas City Chiefs

Arenas was selected by the Kansas City Chiefs in the 2nd round, 50th overall of the 2010 NFL Draft. On July 28, 2010 Arenas signed a 4-year, $3.798 million contract with the Chiefs.

Arenas scored his first career offensive touchdown on October 23, 2011, against the Oakland Raiders. Arenas finished the 2011 season with 2 interceptions, 33 tackles, and 1 sack. He also recovered a fumble in the Chiefs/Steelers game.

For the 2012 season, Arenas tallied 53 solo tackles and 1 forced fumble in 16 games played. He also logged 204 yards in kickoff returns and 297 yards in punt returns on special teams.

Arizona Cardinals

On May 1, 2013, Arenas was traded to the Arizona Cardinals in exchange for Anthony Sherman.

Atlanta Falcons

On March 18, 2014, Arenas signed a one-year contract with the Atlanta Falcons.

New York Jets

Arenas was signed by the New York Jets on August 11, 2015. He was waived on August 30.

Buffalo Bills

On February 3, 2016, Arenas signed a futures contract with the Buffalo Bills.

NFL stats

Year	Team	GP	COMB	TOTAL	AST	SACK	FF	FR	FR YDS	INT	IR YDS	AVG IR	LNG	TD	PD
2010	KC	16	43	36	7	3.0	2	0	0	0	0	0	0	0	8
2011	KC	15	33	26	7	1.0	0	1	0	2	5	3	5	0	6
2012	KC	16	60	53	7	0.0	2	0	0	0	0	0	0	0	8
2013	ARI	16	12	11	1	1.0	0	0	0	0	0	0	0	0	0
2014	ATL	6	9	9	0	0.0	0	0	0	0	0	0	0	0	1
Career		69	157	135	22	5.0	4	1	0	2	5	3	5	0	23

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

Personal

He is the cousin of All-Star point guard Gilbert Arenas. Like Gilbert, his paternal grandfather is of Cuban descent. His brother, Armando Murillo, was a Golden Helmet winner at Robinson High School in Tampa, and started at defensive back for the University of Nebraska in 2007 and 2008. He has a daughter with his girlfriend Stephanie.

[ Source: Wikipedia ]