Filip Krajinović

Junior career

Krajinović started playing tennis in local tennis clinic TK Žak.^[4] In 2006, he reached the fourth round of 2006 Orange Bowl, losing to Bernard Tomic.^[5] Soon after, in 2007, he signed a contract with prestigious Nick Bollettieri Tennis Academy in Bradenton, Florida. The same year, Krajinović won four junior singles titles — Pančevo, Atlanta, Texas and Boca Raton.^[6]

In 2008 Krajinović won a junior title in Loverval.^[6] He reached the 3rd round of 2008 French Open, losing to Evgeny Donskoy.^[7] At the 2008 Wimbledon Championships, he reached his first junior grand slam semifinals, losing to eventual champion Grigor Dimitrov in straight sets.^[8][9] Krajinović also lost to Devin Britton (after winning the first set 1–6) in the semifinals of 2008 US Open.^[10]

Throughout his junior career, Krajinović compiled a singles win/loss record of 54–9, reaching as high as No. 6 in the junior combined world rankings in February 2009.

2008–09: Early Career

Krajinović made his professional debut at the Futures event in 2008 at Miami Beach, Florida, but lost in the first round.^[6] He played at several more futures and challengers, his best result being the semifinals in Knoxville, Tennessee, when he retired from his semifinals match against Bobby Reynolds due to a foot injury.^[11] In Knoxville he had a large group of supporters, mostly Serbian students attending the University of Tennessee. In February 2009 Krajinović played qualifications for 2009 SAP Open, but lost to Somdev Devvarman in the first round.^[12] In March Krajinović was invited by Serbia Davis Cup team captain Bogdan Obradović to be with the team for their 2009 Davis Cup World Group first round tie against Spain, but didn't play in an official match.^[13] In April he reached the quarterfinals of 2009 U.S. Men's Clay Court Championships qualifications in Houston, Texas, losing in straight sets to Michael Russell.^[3] Krajinović received a wild card into the 2009 Serbia Open main draw, losing to Marcel Granollers in three sets in the first round.^[3] In the summer, he reached the finals of three events — Futures in Chico and Rochester and a Challenger in San Sebastián.^[3]

2010: Breaking the top 200

In February 2010, he took part in Challenger tournament GEMAX Open in Belgrade, defeating Somdev Devvarman in the first round but losing to Alex Bogdanovic.^[14] Krajinović played the qualifications for the 2010 BNP Paribas Open. He defeated former French Open champion Gastón Gaudio in three sets in the first round, but then lost to Tim Smyczek in the second.^[15] During the tournament, Krajinović practiced along with world No. 1 player Roger Federer.^[16] Upon losing to Harel Levy in the second round of Challenger in Sunrise qualifying, he was awarded with a wild card for 2010 Sony Ericsson Open main draw,^[17] where he lost to former world No. 4 American player James Blake in three sets in the first round.^[18] Krajinović then earned a wild card for 2010 Barcelona Open Banco Sabadell,^[19] where he lost to Juan Ignacio Chela in the first round.^[20] Receiving a wild card for 2010 Serbia Open, Krajinović collected his first ATP World Tour victory over Evgeny Donskoy. He then defeated Horacio Zeballos in the second round and won the first set against the first seed and world No. 2 Novak Djokovic in the quarterfinals when Djokovic retired.^[21] Krajinović lost to the third seed and eventual tournament winner Sam Querrey in the semifinals. He then joined Viktor Troicki and Nenad Zimonjić in the team of Serbia at the 2010 ARAG ATP World Team Championship in Düsseldorf, Germany.^[22] Krajinović also made the second Challenger final of his career in Kosice, Slovakia.

2011: Injury

He missed first four months of 2011 due to a shoulder injury from previous year.^[23] He returned to tour for four tournaments during May and June; however, on 14 July, Krajinović took the option of having an operation to fix the persistent injury.^[24]

2012: Return to Futures circuit, Grand Slam debut

Starting from scratch with a ranking of 1403, Krajinović returned to the ITF Futures circuit & ATP Challenger tour. In May, he made his Roland Garros debut, defeating 3 opponents, all of whom were ranked several hundred places above him, in the qualifying round and returning to the top 500 in the process. In November, he began training at "Piatti Tennis Team" camp where he was coached by Riccardo Piatti and Ivan Ljubičić among others.^[25][26]

2013: Continued rise

He was runner-up at four Futures tournaments and finished the year ranked 226.

2014: Breaking the top 100

Krajinović won his first professional title on 6 April 2014 at the ITF tournament in Harlingen (TX, USA, 15k).^[27] He followed that up with another Futures title and his first Challenger final, in which he lost to Nick Kyrgios. Later that year, he won two Challenger titles on Italian clay courts, qualified for the US Open main draw, and entered the top 100.

2015–16: Davis Cup quarterfinals

Krajinović earned his first direct-entry into the main draw of a major at the 2015 Australian Open; his first win at a major came at the US Open to Alejandro Gonzalez, before losing to David Ferrer in the second round. In both 2015 & 2016, Krajinović's efforts contributed to the Serbian team finishing two consecutive years in the Davis Cup quarterfinals. In 2016, he once again spent several months sidelined with injury, first in May and June, then ending his season in early September; as a result, he dropped out of the top 200.

2017: Masters final & Davis Cup semifinal

In 2017 he won five challenger tour titles, all on clay: the Neckar Cup, Marburg Open, Thindown Challenger Biella, BFD Energy Challenger in Rome, and the Almaty Challenger. Krajinović broke into the top 75 after reaching the second round of Moscow as a qualifier. He made an unexpected late-season run at the Paris Masters, qualifying for only his second ATP main draw of the year. After defeating Yūichi Sugita, Sam Querrey & Nicolas Mahut, his quarterfinal opponent, world No. 1 Rafael Nadal, withdrew from their match due to injury. He then beat John Isner to reach the final, becoming the first qualifier to reach the final at Masters level since Jerzy Janowicz in 2012 and the lowest ranked player to compete in a Masters 1000 final since world No. 191 Andrei Pavel in Paris in 2003.^[28] He lost to Jack Sock in the finals, but as the runner up, reached a career high ranking of 33, likely leaving the Challenger tour & qualifiers behind him in 2018.

2018: Top 30

After an early exit in Qatar & missing the Australian Open due to injury, he found solid form making the final 16 in Rotterdam, losing a tight match to world No. 5 Grigor Dimitrov & a quarterfinal appearance at the Open 13. At the Dubai Tennis Championships, he made his first ATP 500 semifinal allowing him to reach the top 30. In Indian Wells he ran into world No. 1 Roger Federer in the third round, losing in straight sets. He did not compete at the 2018 French Open.

ATP Masters 1000 finals

Singles: 1 (1 runner-up)

Result	Year	Tournament	Surface	Opponent	Score
Loss	2017	Paris Masters	Hard (i)	Jack Sock	7–5, 4–6, 1–6

Singles: 1 (1 runner-up)

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Loss	0–1	Nov 2017	Paris Masters, France	Masters 1000	Hard (i)	Jack Sock	7–5, 4–6, 1–6

Singles: 23 (11–12)

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Loss	0–1	Jun 2009	USA F14, Chico	Futures	Hard	Ryan Harrison	3–6, 4–6
Loss	0–2	Jul 2009	USA F15, Rochester	Futures	Clay	Vasilis Mazarakis	2–6, 0–6
Loss	0–3	Aug 2009	San Sebastián, Spain	Challenger	Clay	Thiemo de Bakker	2–6, 3–6
Loss	0–4	Jun 2010	Košice, Slovakia	Challenger	Clay	Rubén Ramírez Hidalgo	3–6, 2–6
Loss	0–5	Aug 2013	Poland F5, Bytom	Futures	Clay	Blaž Rola	Walkover
Loss	0–6	Sep 2013	Morocco F4, Agadir	Futures	Clay	Lamine Ouahab	1–6, 6–7(2–7)
Loss	0–7	Oct 2013	Morocco F5, Taroudant	Futures	Clay	Lamine Ouahab	7–6(7–5), 4–6, 1–6
Loss	0–8	Oct 2013	Hungary F2, Budapest	Futures	Clay	Piotr Gadomski	4–6, 7–6(7–4), 3–6
Win	1–8	Apr 2014	USA F10, Harlingen	Futures	Hard	Daniel Smethurst	6–2, 6–4
Win	2–8	Apr 2014	USA F11, Little Rock	Futures	Hard	Daniel Smethurst	6–1, 7–6(7–1)
Loss	2–9	Apr 2014	Sarasota, US	Challenger	Clay	Nick Kyrgios	6–7(8–10), 4–6
Win	3–9	Jun 2014	Vicenza, Italy	Challenger	Clay	Norbert Gombos	6–4, 6–4
Win	4–9	Aug 2014	Cortina d'Ampezzo, Italy	Challenger	Clay	Federico Gaio	2–6, 7–6(7–5), 7–5
Win	5–9	Jul 2015	Braunschweig, Germany	Challenger	Clay	Paul-Henri Mathieu	6–2, 6–4
Win	6–9	Aug 2015	Cordenons, Italy	Challenger	Clay	Adrian Ungur	5–7, 6–4, 4–1 ret.
Loss	6–10	Oct 2015	Rome, Italy	Challenger	Clay	Federico Delbonis	6–1, 3–6, 4–6
Loss	6–11	May 2016	Rome, Italy	Challenger	Clay	Kyle Edmund	6–7(2–7), 0–6
Loss	6–12	Aug 2016	Manerbio, Italy	Challenger	Clay	Leonardo Mayer	6–7(3–7), 5–7
Win	7–12	May 2017	Heilbronn, Germany	Challenger	Clay	Norbert Gombos	6–3, 6–2
Win	8–12	Jul 2017	Marburg, Germany	Challenger	Clay	Cedrik-Marcel Stebe	6–2, 6–3
Win	9–12	Aug 2017	Biella, Italy	Challenger	Clay	Salvatore Caruso	6–3, 6–2
Win	10–12	Oct 2017	Rome, Italy	Challenger	Clay	Daniel Gimeno Traver	6–4, 6–3
Win	11–12	Oct 2017	Almaty, Kazakhstan	Challenger	Clay	Laslo Đere	6–0, 6–3

Doubles: 1 (1–0)

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Win	1–0	Apr 2015	Naples, Italy	Challenger	Clay	Ilija Bozoljac	Nikoloz Basilashvili Alexander Bury	6–1, 6–2