2006–2007 season

Flatt missed the 2006–2007 ISU Junior Grand Prix season due to injury, but qualified through the regional and sectional qualifying competitions, winning both, and made her senior debut at the 2007 U.S. Championships, where she placed 5th and earned a bye to the 2008 U.S. Championships. Flatt made her international debut as a junior in March 2007 at the International Challenge Cup, which she won. Flatt was often referred to as "Rachael the Rock" and was often called " The Consistency Queen" because of her ability to compete cleanly, landing up to seven triples in a freeskate, including her triple-triple combinations.^[15]

2007–2008 season

Flatt competed on the Junior Grand Prix for the first time in the 2007–2008 season, winning the gold medal at her first JGP in Vienna, Austria, and a silver medal at her second JGP in Chemnitz, Germany. She qualified for the Junior Grand Prix Final, placing third in the short program, first in the free skate, and winning the silver medal. At the 2008 U.S. Championships in St Paul, Minnesota, she won the silver medal on the senior level after winning the free skate.

Too young to be eligible for the senior World Championships, Flatt was placed on the team to the 2008 World Junior Championships. After placing third in the short program, she won the free skate and won the title overall. The American ladies – Flatt, Zhang and Nagasu – swept the podium.^[16]

2008–2009 season

Flatt began her season at the 2008 Skate America, where she placed fourth overall. She also competed at 2008 Cup of Russia, winning the silver medal behind Carolina Kostner of Italy.^[17] Flatt won the silver medal at the 2009 U.S. Championships. She placed 5th at the 2009 World Championships after Mao Asada.^{[citation needed]}

2009–2010 season

Flatt won silver at the 2009 Skate America and finished 4th at 2009 Cup of China. She placed ahead of later Olympic champion Yuna Kim in the long program at Skate America.^[18] She won gold at the 2010 U.S. Championships and was named in the U.S. Olympic team.^[19] At the 2010 Winter Olympics in Vancouver, Flatt placed 7th with 182.49 points. She finished ninth at the 2010 World Championships.^{[citation needed]}

2010–2011 season

Flatt won a silver medal at the 2011 U.S. Championships.^[20][21] She was sent to the 2011 World Championships. A week before the event, Flatt was diagnosed with a stress fracture in her right tibia (her landing leg).^[22] Nevertheless, her coach Tom Zakrajsek stated that he felt that Flatt could complete her elements despite the stress fracture and did not request that the alternate, Mirai Nagasu, compete in her place.^[23] During the competition, Flatt had errors on one of her jumps in the short program and three in the free skate and finished in 12th place. In May 2011, Flatt confirmed that she was leaving Colorado Springs in order to study chemical engineering at Stanford University and would look for a new coach in the Bay Area.^[24] In June 2011, U.S. Figure Skating reprimanded and fined Flatt for not informing them of her injury in advance.^[25]

2011–2012 season

On August 19, 2011, Flatt announced that she would be working with Justin Dillon and Lynn Smith in Oakland, California.^[3][26] She also spent some time training with Sergei Ponomarenko in San Jose and Charlie Tickner in Redwood City.^[2][3] Flatt was 10th at 2011 Skate Canada International.^[27] Before leaving for Rostelecom Cup, she sprained ligaments around her ankle joint and finished 9th at the event.^[28] Flatt said she would spend her holiday break in Colorado Springs working with Tom Zakrajsek and Becky Calvin.^[28] She competed at the 2012 U.S. Championships and placed sixth.^{[citation needed]}

2012–2013 season

Flatt finished ninth at the 2012 Skate America.^[29] On October 30, 2012, Flatt said she would miss the rest of the season due to the recurrence of an injury in her right lower leg and ankle.^[30]

2013–2014 season

Flatt completed the first step in qualifying for nationals by winning the 2014 Central Pacific Regionals. She placed first in both the short and the long with an overall score of 139.48.^[31] This was her first step in attempting to make her second Olympic team.^[32] In January 2014, she placed 18th at the U.S. Championships and announced her retirement from competitive skating.^[33]

Ladies' singles

Pair skating with Speroff