Kozák playing for the Czech Republic in November 2019
|Full name||Libor Kozák|
|Date of birth||30 May 1989|
|Place of birth||Opava, Czechoslovakia|
|Height||1.92 m (6 ft 4 in)|
|2009–2010||→ Brescia (loan)||29||(3)|
|2007–2008||Czech Republic U19||9||(3)|
|2009–2011||Czech Republic U21||14||(3)|
* Senior club appearances and goals counted for the domestic league only and correct as of 27 October 2019|
‡ National team caps and goals correct as of 22:55, 4 August 2017 (UTC)
Kozák started his career in 2001 with Czech club Slezský FC Opava, first playing with its youth teams before being promoted to the first team in 2007. Considered a promising talent, Kozák was a prolific goalscorer in the Czech Second Division with Opava. In October 2007, he scored his first hat-trick, coming in a 5–1 Opava win against FC Zenit Čáslav in the second division.
In January 2008, Kozák went on trial with English Premier League club Portsmouth, however he did not join Pompey. At the end of the season, Italian giants Lazio came calling and Kozák accepted a move to Rome.
After a season at Lazio, the club loaned him to Serie B side Brescia for the 2009–10 season, to gain experience and regular playing time. On 26 September 2009, Kozák scored his first goal in Italy against Grosseto.
At the end of his loan spell, he returned to Lazio. He scored his first goal for the Biancocelesti on 18 September 2010 which turned out to be the winner against Fiorentina. On 16 January 2011, he netted the deciding goal against Sampdoria before registering his third and fourth goals for Lazio two weeks later, against Fiorentina once again. Having achieved four goals in nine starts for Lazio of which four goals came in January, Michal Bílek, manager of the Czech Republic, suggested Kozak would be called up to the national team and announced he would be make a special trip to the Stadio Olimpico to watch his game against A.S. Bari.
In the 2012–13 season Kozák, under coach Vladimir Petković, experienced a two-faced season failing to score in 19 appearances in Serie A, but finishing the season as the leading goal scorer in the Europa League with 8 goals. He scored his first club hat trick against VfB Stuttgart in Rome on 14 March 2013, helping his team reach the last eight by an aggregate score of 5–1.
On 2 September 2013, Kozák signed a four-year deal with English side Aston Villa for €6.5 million transfer fee, being assigned the number 27 shirt. On 14 September 2013, he made his Aston Villa debut at Villa Park, but couldn't prevent the side from losing 2–1 to Newcastle United. On 21 September 2013, he scored his first goal for Villa, seconds after replacing Christian Benteke, against Norwich City which proved to be the winning goal in a 1–0 victory. On 9 November 2013, he scored his second Villa goal with a header in a 2–0 victory against Cardiff City. On 4 December 2013, he scored the second goal in a 3–2 victory over Southampton. On 21 December 2013, he scored the only goal for Villa in a 2–1 loss to Stoke City at the Britannia Stadium.
On 2 January 2014 Villa announced that Kozak had broken his right leg in a training ground collision with teammate Ciaran Clark, and would miss the rest of the 2013–14 season. Complications and further injuries saw him miss the entire 2014–15 season as well. He eventually made his come back 15 months after the initial leg break in March 2015 in an under-21 match against Wolverhampton Wanderers. He made his first team comeback in July 2015 in a 3–1 pre-season defeat to Fulham, in which he scored for the first time since December 2013. In February 2017, with Kozak's contract running out at the end of season, Aston Villa announced that he would miss the rest of the season undergoing surgery on his ankle.
Kozák was released by Aston Villa at the end of the 2016–17 season.
Kozák received his first call up for the senior Czech national team on 15 March 2011, when coach Michal Bílek selected him in his squad to take on Spain and Liechtenstein, however Kozák did not make his senior international debut.
|Opava||2006–07||Czech 2. Liga||15||8||0||0||–||–||15||8|
|Brescia (loan)||2009–10||Serie B||29||3||0||0||–||0||0||29||3|
|Aston Villa||2013–14||Premier League||14||4||0||0||1||0||–||15||4|
|Slovan Liberec||2018–19||Fortuna liga||14||7||1||0||–||–||15||7|
|Sparta Prague||2019–20||Fortuna liga||14||6||2||3||–||2||0||18||9|
- As of 10 June 2019
|1||14 August 2013||Puskás Ferenc Stadion, Budapest, Hungary||4||Hungary||1–0||1–1||Friendly|
|2||10 September 2013||Juventus Stadium, Turin, Italy||6||Italy||1–0||2–1||2014 FIFA World Cup qualification|
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