He also reached the semifinals of the Davis Cup three times with the United States team, in 2008, 2012, and 2018.Querrey was born in San Francisco and attended Thousand Oaks High School, graduating in 2006.

[9] His father Mike Querrey recommended that his son try making it in tennis,[10] as he often regretted his own decision to attend the University of Arizona rather than play baseball for the Detroit Tigers, who had drafted him.

[citation needed] He won his first-round match at the Indian Wells Masters tournament over Bobby Reynolds, before falling to James Blake in three sets.

At the 2006 US Open, Querrey received a wildcard and defeated Philipp Kohlschreiber in straight sets, before falling to Gastón Gaudio in the second round.

The next month, at the Monte-Carlo Masters, Querrey reached the quarterfinals, defeating former French Open champion Carlos Moyá, Andreas Seppi, and No.

Querrey was tapped to play for the US in the Davis Cup semifinals against Spain as a replacement for James Blake, who had withdrawn citing exhaustion.

[14] Querrey next played at the ATP Tour 500 event in Washington, where he lost to top seed Andy Roddick, in the round of 16.

[citation needed] Querrey and Isner were selected to play singles for the United States Davis Cup Team against Serbia on indoor clay in March 2010.

[citation needed] At the BNP Paribas Open, Querrey was seeded 17th and, after receiving a bye in the first round, then beat Jérémy Chardy in straight sets.

[citation needed] At the Sony Ericsson Open, seeded 21st this time, after receiving a bye in the first round, he lost to Jérémy Chardy in three sets.

He reached the doubles final with John Isner at the 2010 Rome Masters, but lost to Davis Cup teammates Bob and Mike Bryan.

[citation needed] Querrey played in the 2010 Serbia Open and progressed to the final, where he faced Davis Cup teammate John Isner.

[citation needed] At the 2010 French Open, Querrey was seeded 18th, but lost in the first round to fellow American Robby Ginepri in four sets.

[citation needed] In the Queens Club in London, Querrey beat fellow American Mardy Fish in straight sets, in the final of the Aegon Championships.

[citation needed] Querrey defended his title at the Farmers Classic in Los Angeles, winning a third-set tiebreaker in the quarterfinals against 2003 Australian Open finalist Rainer Schüttler, then defeating Janko Tipsarević in the semifinals, to reach his fifth final of the year.

[citation needed] During his time in Washington, he along with Bob and Mike Bryan conducted a tennis clinic for children, where they unexpectedly met president Barack Obama.

[citation needed] The first in Memphis in February, where he lost to Mardy Fish, and the second in Valencia, where he was beaten in straight sets by Juan Martín del Potro.

He lost both of his ties in the Davis Cup against Great Britain in San Diego in January and was eliminated in the first round in Memphis and Delray Beach.

His form picked up at the Queen's Club grass tournament, where he defeated Jérémy Chardy and Denis Kudla in the first two rounds.

Sam made it to the semifinals of the Aegon International in Eastbourne, England, but fell to eventual champion Feliciano López.

Querrey reached his first singles final for three years at the U.S. Men's Clay Court Championships, where he was beaten by compatriot Jack Sock.

After failing to make it past the 2nd round of any tournament since July, Querrey started 2016 with a very strong run, reaching the semi-finals in Memphis, where he would lose to the eventual champion Kei Nishikori.

The following week, Querrey reached the final at Delray Beach, where he defeated American Rajeev Ram to win his first ATP title since 2012 and return to the Top 50 of the world rankings.

He then continued his successful run by defeating Nicolas Mahut to become the first American man to reach the quarterfinals of a Grand Slam since John Isner and Andy Roddick did so at the 2011 U.S. Open.

He also played doubles with fellow American Steve Johnson but lost to Italians Fabio Fognini & Andreas Seppi in the first round.

Returning to the US, he helped the US defeat Switzerland in the first round of the Davis Cup by winning his singles match against Adrien Bossel.

At the ATP Acapulco tournament he beat David Goffin, Dominic Thiem, and Nick Kyrgios, before defeating world No.

[27] Furthering his success in Mexico, he won the 2017 Los Cabos Open in August, defeating Thanasi Kokkinakis in the final.

At the 2017 US Open he became the first male American to reach the quarterfinals since Andy Roddick and John Isner both did so in 2011, at which he was defeated by Kevin Anderson.

He then played for the Sacramento Capitals in 2012 and 2013, the Washington Kastles in 2015 and 2017, the Orange County Breakers in 2018, and the Vegas Rollers for their inaugural season in 2019.