Rebecca Marino

Marino played the first professional event of her career at the $25k in Vancouver in August 2005, losing in qualifying.[15] In August 2006, she lost in the qualifying first round of the Rogers Cup as a wildcard.[16] Marino won in August 2008 her first singles title at the $10k in Trecastagni and two $10ks in doubles, respectively in Evansville, Indiana in July and in Southlake, Texas in October of the same year.[17][18][19] In November 2008, she won her first WTA Tour main-draw match at the Challenge Bell as a qualifier, defeating Jill Craybas in the first round. She was defeated by Galina Voskoboeva in the second round.[20] In September 2009 at the Challenge Bell, Marino reached the second round for the second straight year with a win over Lauren Albanese, but lost her next match to Julia Görges.[21]

Marino played the first Grand Slam of her career at the US Open in August. After winning three qualifying matches to enter the main draw, she beat Ksenia Pervak to set up a second round clash with world No. 4, Venus Williams. She lost after a close first set which ended in a tiebreak. After the match, Venus said: "It seemed like every time I had an opening she came up with a big serve, so I guess I know what it is like now playing myself."[22] Her next tournament was in Quebec City at the Challenge Bell in September where she beat fellow Canadian Heidi El Tabakh in the first round. Marino upset first seeded and world No. 14, Marion Bartoli, in straight sets in the second round, which was her first career win against a top-20 player. She lost her quarterfinal match against Bethanie Mattek-Sands.[23] She then stayed in the province of Québec and played a $50k in Saguenay the following week. Marino made it to the final and defeated Alison Riske in three tough sets to win the tournament, the second singles title of her career.[24] She won her second straight $50k two weeks later in Kansas City by defeating Edina Gallovits in the final.[25] The next week, Marino won her third straight $50k in Troy where she defeated Ashley Weinhold.[26] In November, she lost in the semifinals of the 50K in Toronto against Alizé Lim, stopping her winning streak at 18.[27]

Rebecca Marino at the 2011 Wimbledon Championships

At the Australian Open in January, Marino defeated Junri Namigata in the first round. She lost in the second round against sixth seed Francesca Schiavone with a score of 7–9 in the final set.[28] In February, Marino reached her first WTA final at the event in Memphis, where she faced Magdaléna Rybáriková. She was forced to retire from the match after losing the first set because of an abdominal strain.[29] Marino qualified for the BNP Paribas Open in March, but lost in the first round to Ekaterina Makarova.[30] Following her first round exit, Marino took part in the inaugural $100k Bahamas Women's Open. As the fourth seed, she defeated qualifier Sophie Ferguson in the first round, Pauline Parmentier, and another qualifier, Heather Watson to reach the semifinals, where she lost against fifth seeded Angelique Kerber.[31] At the French Open in May, she won her first round match over Kateryna Bondarenko and her second round match against María José Martínez Sánchez. She lost against 13th seed Svetlana Kuznetsova in the third round, her best Grand Slam performance so far.[32] The next month, she reached the second round for her fourth straight Grand Slam at Wimbledon where she lost to Roberta Vinci.[33] At the US Open in August, Marino lost for the first time of her career in the first round of a Grand Slam to Gisela Dulko.[34] In September, she reached the quarterfinals of the Challenge Bell for the second straight year after beating fellow Canadians Stéphanie Dubois and Aleksandra Wozniak in the first and second round, respectively, but lost to Michaëlla Krajicek.[35] At the last tournament of her season, the BGL Luxembourg Open in October, she surprised the second seed and No. 15 player in the world Anastasia Pavlyuchenkova in the first round which was the second win of her career over a top-20 player. She lost her second round match against qualifier Bibiane Schoofs.[36]

In January 2012, Marino lost in the first round of the Australian Open to Gréta Arn.[37] She took a break from tennis to deal with mental and physical fatigue from February 2012 to late August 2012.[38] Marino made a comeback the second week of September 2012 at the $25k in Redding, California, losing in the second round to Sachie Ishizu.[39] The next month, in only her fifth tournament since coming back, she defeated fellow Canadian Sharon Fichman to win the $25k in Rock Hill, South Carolina as a qualifier.[40] She then lost a week later in the first round of the $50k in Saguenay to Maria Sanchez, stopping her winning streak at eight matches.[41] In November 2012, at the $50k in Toronto, Marino was forced to retire in her second round match after suffering an abdominal strain. She was supposed to end her season the next week at the $75k in Phoenix, but had to withdraw following her injury.[42]

At the Australian Open in January 2013, her first Grand Slam since coming back, Marino made it to the main draw with her protected ranking of 115, but lost to Peng Shuai in the opening round.[43] After playing some ITF and WTA tournaments, she decided in late February 2013 to take a second break from tennis with no timetable for her return.[3]

Marino started training again during the first week of September 2017 and decided to return to competition in October 2017, after being away from the game for nearly five years.[7] She was scheduled to play the $60k in Saguenay but her comeback was delayed by three months due to ITF administrative regulations.[44][8] She returned at the $15k in Antalya at the end of January 2018 and won the title in her first tournament back, not losing a set along the way.[9][10] The next week, she won her second straight title at the $15k in Antalya, without losing a set once again.[45] Again in Antalya the week after, she captured her third $15k event in a row.[46] Playing her fourth straight tournament in Antalya, her first on clay, Marino lost in the quarterfinals, ending her winning streak at 19 matches.[47] At her next tournament in March, a $25k in Kōfu, she reached the quarterfinals as a qualifier but was defeated by world No. 101 Luksika Kumkhum in three sets.[48] In April at the $25k in Osaka, she advanced to her fourth final of the season where she lost to Destanee Aiava.[49]