Career
Born in Sakon Nakhon Province, Sinthaweechai spent his youth career with Assumption Sriracha School between 1999 and 2002. The former U23 international joined Osotsapa in 2005 before moving abroad to an Indonesian club, Persib Bandung in 2006. He was also participated in AFC Champions League with in 2008 but the club were knocked out in the group stage.
The Thai goalkeeper rejoined Persib Bandung on a season loan in 2009.
After the loan spell with the Indonesian, Sinthaweechai returned to and has been playing for the club regularly. In December of 2015 it was announced that Sinthaweechai would be joining Suphanburi for the 2016 season.
The deal, which costs 15 million Thai bahts broke the record as the most expensive domestic transfer in Thai football history. Sinthaweechai has been serving the country in almost every level
U19, U23 and senior squad respectively.
He was first called up for the U19 team between 2000-2001 but did not make much of recognition. lieutenant was between 2002-2005 that the goalkeeper started to become public interest. He was called up for U23 in 2002 and since the U23 team participate many more competitions than the lower level, practically part of senior squad, he was given more chances and eventually earned no.1 status in the team
He made totally 22 appearances for the U23 team between 2002-2005.
Sinthaweechai was promoted to the senior squad in 2004. However, he lost his no.1 status in numerous occasions as well, as he underperformed in matches.
Anyway, under the management of Winfried Schafer, which was appointed as "s head coach in July, 2011, Sinthaweechai firmly regained his first team regular in national team so far, especially in 2014 Asian World Cup Qualifying section which he earned many positive comments from the media and fans regarded to his performances against Australia. He was part of Winfried Schäfer"s 2012 AFF Suzuki Cup, but didn"t play in the tournament because he got a fever.
Sinthaweechai played a friendly match against China, and he was captain in that match.
In 2013 he was called up to the national team by Surachai Jaturapattarapong to the 2015 AFC Asian Cup qualification, he was chosen by the coach as captain. In October, 2013 Sinthaweechai started out as a captain for against Bahrain, in a friendly match. In October 15, 2013 he captained against Iran national football team in the 2015 AFC Asian Cup qualification.
In May 2015, he played for in the 2018 Fédération internationale de football association World Cup qualification (AFC) against Vietnam, he also kept a clean sheet in the following game.
Club International Individual.