Daniel Benjamin "Danny" Califf (born March 17, 1980 in Montclair, California) is an American soccer player who currently plays for Chivas USA in Major League Soccer.

Califf (pronounced kāl'ĭ-f) started his youth career in soccer for Canyon Hills Soccer Association, playing on the Canyon Classic team coached by his father. He played college soccer at the University of Maryland from 1998 to 2000. As a freshman, he started all 24 of the team's games, and was named to the Soccer America All-Freshman team for helping to lead the Terrapins to the Final Four. As a sophomore, he started 20 games, and was named an NSCAA third-team All-American.

After his sophomore season, Califf signed a Project-40 contract with MLS and entered the 2000 MLS SuperDraft, where he was selected sixth overall by the Los Angeles Galaxy. Califf was immediately slotted into the Galaxy's starting line up, appearing in 18 games, 16 of them starts, as a rookie. Over the next three years, Califf would establish himself as one of the best central defenders in the league, starting 69 games for the Galaxy while helping the team to win a U.S. Open Cup in 2001 and a MLS Cup in 2002. Califf struggled with injuries in 2004, and was able to make only 10 starts, playing 855 minutes.

Danny may refer to:

Sheanon Antoine Williams (born March 17, 1990 in Boston, Massachusetts) is an American soccer player, currently playing for Philadelphia Union in Major League Soccer.

Williams attended The Rivers School in Weston, Massachusetts and played club soccer for FC Greater Boston Bolts before being offered a place at the IMG Soccer Academy in Bradenton, Florida in 2005 as a member of the U.S. Under-17 National Team Residency Program. He earned NSCAA/adidas Youth All-America honors in 2006 and 2007, and was named to the 2007 PARADE High School All-America squad.

Williams enrolled at the University of North Carolina in January 2008, and subsequently played one year of college soccer for the Tar Heels, before leaving school a year early to attempt to secure a professional contract in Europe.

Despite performing well on trial with teams such as Vfl Wolfsburg, Williams was unable to secure a contract, and returned to the United States in 2009. He played with the Carolina Dynamo of the USL Premier Development League, earning All-Eastern Conference honors after scoring six goals and 16 points in 12 games.

Brad Knighton (born February 6, 1985 in Hickory, North Carolina) is an American soccer player who currently plays for Vancouver Whitecaps FC in Major League Soccer.

Knighton played four years of college soccer at UNC-Wilmington as well as for Indiana Invaders in the USL Premier Development League.

Undrafted by Major League Soccer, he attended a New England Revolution tryout in early 2007 and was good enough to be invited on trial for the preseason. He impressed during the trial in Bermuda, winning a spot as the Revolution's third-choice keeper and a developmental contract with the club. The signing made him the first soccer player from UNC-Wilmington to be on a MLS roster.

After spending his first year and a half with the Revs behind Matt Reis and Doug Warren, he was loaned to the Portland Timbers on July 2, 2008 for the remainder of the 2008 Major League Soccer season. The move was aimed at getting Knighton some valuable playing time as he had seen no first team action while with New England.