Guido Albert Merkens, Jr. (born August 14, 1955 in San Antonio, Texas

San Antonio, Texas

San Antonio is the seventh-largest city in the United States of America and the second-largest city within the state of Texas, with a population of 1.33 million. Located in the American Southwest and the south–central part of Texas, the city serves as the seat of Bexar County. In 2011,...

) is a former professional American football

American football

American football is a sport played between two teams of eleven with the objective of scoring points by advancing the ball into the opposing team's end zone. Known in the United States simply as football, it may also be referred to informally as gridiron football. The ball can be advanced by...

 player who played quarterback

Quarterback

Quarterback is a position in American and Canadian football. Quarterbacks are members of the offensive team and line up directly behind the offensive line...

,
running back

Running back

A running back is a gridiron football position, who is typically lined up in the offensive backfield. The primary roles of a running back are to receive handoffs from the quarterback for a rushing play, to catch passes from out of the backfield, and to block.There are usually one or two running...

, wide receiver

Wide receiver

A wide receiver is an offensive position in American and Canadian football, and is the key player in most of the passing plays. Only players in the backfield or the ends on the line are eligible to catch a forward pass. The two players who begin play at the ends of the offensive line are eligible...

, punter and Defensive Back

Defensive back

In American football and Canadian football, defensive backs are the players on the defensive team who take positions somewhat back from the line of scrimmage; they are distinguished from the defensive line players and linebackers, who take positions directly behind or close to the line of...

 for ten seasons for the Houston Oilers

Tennessee Titans

The Tennessee Titans are a professional American football team based in Nashville, Tennessee, United States. They are members of the South Division of the American Football Conference in the National Football League . Previously known as the Houston Oilers, the team began play in 1960 as a charter...

, New Orleans Saints

New Orleans Saints

The New Orleans Saints are a professional American football team based in New Orleans, Louisiana. They are members of the South Division of the National Football Conference of the National Football League ....

 and Philadelphia Eagles

Philadelphia Eagles

The Philadelphia Eagles are a professional American football team based in Philadelphia, Pennsylvania. They are members of the East Division of the National Football Conference in the National Football League...

 of the NFL

National Football League

The National Football League is the highest level of professional American football in the United States, and is considered the top professional American football league in the world. It was formed by eleven teams in 1920 as the American Professional Football Association, with the league changing...

. In his first two seasons in the NFL, he was primarily a punt return specialist. During his tenure with the Saints, he served as the third-string quarterback, holder for field goals and special teams player; with occasional time as a wide receiver or safety.

In Houston during the 1970s, playing primarily on special teams, his penchant for being the emergency backup for all of the aforementioned positions earned him the popular aphorism "Jack of all trades

Jack of all trades, master of none

"Jack of all trades, master of none" is a figure of speech used in reference to a person that is competent with many skills but is not necessarily outstanding in any particular one....

."

Trivia

During the second season of the TV show "Chuck

Chuck (TV series)

Chuck is an action-comedy/spy-drama television program from the United States created by Josh Schwartz and Chris Fedak. The series is about an "average computer-whiz-next-door" named Chuck, played by Zachary Levi, who receives an encoded e-mail from an old college friend now working for the Central...

" on NBC

NBC

The National Broadcasting Company is an American commercial broadcasting television network and former radio network headquartered in the GE Building in New York City's Rockefeller Center with additional major offices near Los Angeles and in Chicago...

, the episode "Chuck versus the DeLorean" first broadcast on December 8, 2008 mentioned Merkens when John Casey

John Casey (Chuck)

Colonel John Casey is portrayed by actor Adam Baldwin on the television show Chuck on NBC. Prior to the episode "Chuck Versus the Tic Tac," he was partnered with CIA agent Sarah Walker to protect Chuck Bartowski....

 (Adam Baldwin

Adam Baldwin

Adam Baldwin is an American actor, known for his roles as Animal Mother in Stanley Kubrick's Full Metal Jacket, Ricky Linderman in My Bodyguard, Knowle Rohrer in The X-Files, and Marcus Hamilton in Joss Whedon's Angel...

) states that Sarah's

Sarah Walker (Chuck)

Sarah Lisa Bartowski is the alias of one of the main characters of the fictional television show Chuck on NBC. She is portrayed by Yvonne Strahovski and is one of two agents assigned by the NSA and CIA to protect Chuck Bartowski after he unwittingly downloads the secret government computer known...

 dad (played by Gary Cole

Gary Cole

Gary Michael Cole is an American actor. Cole is known for his supporting roles in numerous film and television productions since the 1990s.-Early life:...

) has checked into a hotel under the alias "Guido Merkens."