Youth career in 2013|140px He studied at
Brentwood School, a private school in Essex, UK. During this time he represented the Thai national team at schoolboy level as well as being on the books of London-based club
Crystal Palace. His performances for his school helped them reach the final of the 2001 Independent Schools FA Cup, scoring 8 goals in 4 games along the way. He eventually moved to
Everton for one year before returning to Thailand.
Senior career The young forward joined
Thai Premier League side
BEC Tero Sasana in 2006 aged 21 and played for the club until 2008 made totally 65 appearances scored 22 goals and won the 2008 Striker of the Year award. In 2009, a
Belgian side
Lierse S.K. signed the Thai star with an undisclosed deal. However, Leesaw spent most of his time with the new club in reserve team and made only 8 appearances with 1 goal. Later in the first season with the
Belgian club, he was moved back to
Thailand and played for
Thai Premier League champions
Muangthong United on a loan deal. Teeratep made 23 appearances and scored 4 goals before spending the rest of his loan spell with his former club,
BEC Tero Sasana, in the same season and made 8 appearances with 3 goals. Leesaw eventually rejoined
BEC Tero Sasana, leading to 15 appearances and 3 goals from the injury suffer in 2010–2011 season. In early 2012, Teeratep was on the move again to 2010–2011
Thai Premier League 4th place club,
Bangkok Glass. In 2013 Teeratep played against
Manchester United in a
TPL All-Stars team. He scored the winning goal, beating United in
David Moyes' first match in charge, during their pre-season tour.
Police United Teeratep joined
Police United in 2014, but club relegation from
Thai Premier League In 2015 meant Teeratep would play for
Police United in
Thai Division 1 League. Teerathep's first goal of the season was against
PTT Rayong at
PTT Stadium in a match
Police United won 2–1. On 17 October 2015 Teeratep scored his first hattrick of the season against
PTT Rayong at
Boonyachinda Stadium the team went on to win 6–0. At the end of the season
Police United were promoted to the
Thai Premier League.
Bangkok United On 24 January 2016, Winothai joined
Bangkok United.
Chonburi FC On 26 June 2019, Winothai joined
Chonburi on loan from
Bangkok United. He scored his first goal for
Chonburi in match against
PTT Rayong.
Retirement Teeratep officially announced his retirement from professional football on 28 November 2022. After he led his team,
Police Tero to win against
Nakhon Ratchasima by scoring the winning goal in the penalty spot for the team to collect 3 points as the final match by ending his football career at 96 goals in the
Thai League 1. ==International career==