Cas may also mean:

Leon Julian Brendan Best (born 19 September 1986) is an Irish footballer who plays as a striker for Premier League team Newcastle United and the Republic of Ireland national football team. Best represented Ireland at under-21 level and won his first full international cap against Nigeria on 29 May 2009.

Best had a youth career at Notts County. His first professional club was then Premier League club Southampton. He has also played for Coventry City. He moved to Newcastle in 2010.

As a young player, Best started his career at Notts County before being signed as a trainee by then Premier League club Southampton. He made his professional debut against Newcastle United on his 18th birthday in 2004. A loan spell at Queens Park Rangers followed later in the 2004–05 season.

He was a member of Southampton's youth team that reached the final of the FA Youth Cup in 2005, losing on aggregate to Ipswich Town.

Best also had two loan spells at Sheffield Wednesday in the 2005-06 season, scoring his first professional goal and Wednesday's first of the season on 9 August 2005 at Hillsborough against Hull City. The first loan spell was cut short in the same match when Best broke his foot and returned to St. Mary's after only 5 days in Sheffield. After recovering with Southampton, Best then returned to Hillsborough at the end of the January transfer window (though there was also speculation he would go to Crystal Palace) where he remained until the end of the season, scoring Wednesday's last goal of the season at Derby County on 30 April 2006.

Benjamin Cas Haley (born December 27, 1980; Paris, Texas) is an American singer/guitarist who was the runner-up on Season 2 of America's Got Talent.

His self-titled album charted as the #8 Best selling reggae album of 2008 on the Billboard Charts.

In June 2009, it was announced that Haley & former Jah Roots lead singer, Josh Heinrichs, would release Favorites, a collection of modern and classic reggae favorites redone by Haley and Heinrichs. Announced to be released in late summer 2009 by Big Karma Records, the album was postponed due to producer Jim Slaton's unexpected death from a heart attack in August 2009. The album ended up never being released, but was mastered by Rob Fraboni.

In December 2009, Haley joined the Jamaican reggae artist Tanya Stephens to sing on a cover of "Wolfman's Brother" for the Phish reggae tribute album Dub Like An Antelope - Legends of reggae celebrate Phish. The album was released December 14, 2009.

In June 2010, Haley toured Hawaii with Josh Heinrichs playing shows on Oahu & The Big Island. While on tour they appeared on several local radio programs and the television morning news portion of Hawaii News Now.

Josh Heinrichs is an American reggae singer/songwriter who was the former lead singer of internationally known indie reggae band, Jah Roots and current owner/operator of indie reggae record label, GanJah Records. Since leaving the band in 2008, Heinrichs has launched a solo career and released several albums.

Junior Marvin of Bob Marley & The Wailers was quoted about Heinrichs, saying “Josh is one of those guys who comes along and fills his music with such an inspiration and with such energy that it translates so easily and positively to anyone hearing it. He is a rare talent in both his ability to craft a song with a certain timeless quality to it, and then, man, his voice, well, I mean, damn, the kid can sing as good as anyone out there; a bright future – that one.”

Heinrichs released his first solo EP in July 2009, "Things Change" a 6 song EP on GanJah Records.

In late 2009 Heinrichs released a statement that he had recorded a full album of reggae classics and covers entitled Favorites with friend Cas Haley due to be released in 2010 via Jim Slaton and his label, Big Karma Records, but the album was being indefinitely shelved due to Jim Slaton's untimely death from a heart attack. Although songs were used from the album for both Heinrichs and Haley's 2010 albums.