Toronto Blue Jays The
Toronto Blue Jays selected Farquhar in the tenth round, with the 309th overall selection of the
2008 MLB draft. After signing with Toronto, he made his professional debut with the
Auburn Doubledays of the
Low-A New York–Penn League. He was promoted to the
Lansing Lugnuts of the
Single-A Midwest League during the season. He finished 2008 with 2–2 win–loss record, innings pitched (IP), and a 1.95 ERA. He began the 2009 season with the
Dunedin Blue Jays of the
High-A Florida State League and finished the season with the
New Hampshire Fisher Cats of the
Double-A Eastern League. In 2009, Farquhar had a 2–4 record, 1.87 ERA and 22 saves, in innings pitched. He returned to the Fisher Cats in 2010, pitching to a 3.52 ERA while striking out 79 but walking 42 in innings. He pitched in the
Arizona Fall League after the season.
Oakland Athletics On November 18, 2010, the Blue Jays traded Farquhar to the
Oakland Athletics along with
Trystan Magnuson in exchange for outfielder
Rajai Davis. Farquhar threw eight innings without allowing a
run for the
Sacramento River Cats of the
Triple-A Pacific Coast League (PCL).
Toronto Blue Jays (second stint) Farquhar was traded back to the
Toronto Blue Jaysin exchange for reliever
David Purcey on April 18, 2011. The Blue Jays assigned him to the
Las Vegas 51s of the PCL. Farquhar made his major league debut on September 13, against the
Boston Red Sox. He pitched of an inning and allowed three earned runs on three hits and two walks. Farquhar made 20 appearances for the Double-A
New Hampshire Fisher Cats to begin the 2012 season, registering an 0-1 record and 2.97 ERA with 33 strikeouts and one save across innings pitched. On June 2, 2012, Farquhar was
designated for assignment after Toronto claimed pitcher
Chris Schwinden off waivers.
Oakland Athletics (second stint) On June 9, 2012, the Athletics claimed Farquhar off waivers from the Blue Jays. After making five appearances in the minor leagues for the
Sacramento River Cats, the Athletics waived him on June 24 picking up the contract of
A.J. Griffin.
New York Yankees The
New York Yankees claimed Farquhar off waivers on June 26, 2012 and optioned him to the Double-A
Trenton Thunder. However, he was placed on waivers three days later, as the Yankees claimed Schwinden, who had been waived by the
Cleveland Indians. Farquhar was
outrighted to Trenton on July 1 and promoted to the Triple-A
Scranton/Wilkes-Barre RailRiders on July 19. Farquhar started the 2013 season with the
Tacoma Rainiers of the PCL. The Mariners purchased his contract, promoting him to the major leagues on May 17. On August 2, Farquhar replaced
Tom Wilhelmsen as closer, and he recorded his first major league save on August 3 against Baltimore. From that point until the end of the season, he went 0–3 with 16 saves in 24 games, striking out 29 in innings with a 2.38 ERA. Overall on the year, he went 0–3 with a 4.20 ERA in 46 appearances, striking out 79 in innings. In 2014, Farquhar returned to a setup role behind new closer
Fernando Rodney. Farquhar was 3–1 with 1 save, a 2.66 ERA, and 81 strikeouts in 71 innings pitched. Farquhar and Rodney both fell off in 2015, with Farquhar posting a 1–8 record, one save, and 5.12 ERA in 41 innings.
Tampa Bay Rays On November 5, 2015, the Mariners traded Farquhar,
Brad Miller, and
Logan Morrison to the
Tampa Bay Rays for
Nate Karns,
C. J. Riefenhauser, and
Boog Powell. On April 23, 2016, Farquhar was sent down to the
Durham Bulls of the Triple-A
International League. He was recalled on May 14, but was designated for assignment the next day and was back with Durham on May 16. On June 25, he was back with the Rays, but one day later, he was sent down again to Durham. After one day, on June 27, he was called back up to the Rays. This time Farquhar made it 8 days before his July 5 demotion back to Durham. On August 6, he was called back up to the Rays, his final move of the season. He finished the season with a 3.06 ERA and 46 strikeouts in 35 games ( innings) for the Rays. He cleared waivers and was assigned to Durham. The Rays released him on July 20.
Chicago White Sox On July 24, 2017, Farquhar signed a minor league contract with the
Chicago White Sox. His contract was purchased by the White Sox on August 19.
Astros sign stealing In a game on September 21, 2017, against the Houston Astros, Farquhar made a pitching appearance in the 8th inning against Astros hitter
Evan Gattis. During the at bat, Farquhar noticed banging from within the Astros dugout every time the catcher called for any pitch other than a fastball. Eventually, he and catcher
Kevan Smith made a mound visit because of it and afterwards Gattis was struck out after a pitch without a sign being called. The incident would become part of the investigation of the
Houston Astros sign stealing scandal.
2018 brain hemorrhage On April 20, 2018, after pitching in relief in the sixth inning in a game against the
Houston Astros, Farquhar collapsed in the dugout. Witnesses saw him go into the White Sox's dugout and vomit before losing consciousness. Farquhar was carried out by ambulance and taken to
Rush University Medical Center. Teammates said they were shocked because they did not "notice any signs that Farquhar might have been sick." After further testing, doctors revealed Farquhar suffered from a
brain hemorrhage which was caused by a ruptured
brain aneurysm. On May 7, Farquhar was discharged from the hospital. Despite being ruled out for the rest of the 2018 season,
Demetrius Klee Lopes and other doctors expected him to make a full recovery and pitch again. On June 1, he had recovered enough to throw the
ceremonial first pitch for the White Sox's game against the
Milwaukee Brewers. On October 26, Farquhar was removed from the 40-man roster and sent outright to Triple-A. He elected free agency after the season.
New York Yankees (second stint) On January 21, 2019, Farquhar signed a minor league contract with the Yankees. The Yankees assigned him to Triple-A Scranton/Wilkes-Barre, where he allowed seven runs in three innings pitched in two games. The Yankees released him on June 19. On August 1, he announced that he was retiring on his
Instagram. ==Coaching career==