On 26 August 2013 de Blok signed a minor league contract with the Seattle Mariners organization. However, on 17 April 2014, de Blok retired from professional baseball without playing in a game for the organization.[1]
Mr. Cocker HCAW
de Blok came out of retirement to join Mr. Cocker HCAW for the 2014 season, a team in the Honkbal Hoofdklasse, the top baseball league in the Netherlands, where he posted a 3.20 ERA in 17 appearances.
Amsterdam Pirates
The following season, de Blok joined the Amsterdam Pirates, where he posted a 4-0 record and 1.54 ERA in 20 games with the team.[2] After the season, de Blok was offered a tryout with the Rakuten Golden Eagles of Nippon Professional Baseball (NPB), the top baseball league in Japan. After the tryout de Blok decided to return to the Pirates.[3] That season, he recorded a 5-0 record and 0.88 ERA with 43 strikeouts in 41.0 innings of work.
Detroit Tigers
After a good performance in the 2017 World Baseball Classic, de Blok signed a four-year minor league deal with the Detroit Tigers organization on 10 April 2017.[4] He made his affiliated debut for the Low–A Connecticut Tigers, and after pitching 3+2⁄3 scoreless innings, was promoted to the Single–A West Michigan Whitecaps, where he spent the rest of the season, posting a 4-2 record and 2.87 ERA with a 1.02 WHIP in 82 innings pitched.[5] de Blok spent the 2019 season with the High–A Lakeland Flying Tigers, recording a 2-13 record and 4.04 ERA in 21 games. De Blok did not play in a game in 2020 due to the cancellation of the minor league season because of the COVID-19 pandemic.[6] On 2 November 2020 he elected free agency.[7]
Amsterdam Pirates (second stint)
De Blok returned to the Amsterdam Pirates following his stint with the Tigers organization after logging a 2.00 ERA in 5 games with the team in 2020. In 2021, de Blok posted a 3-2 record and 1.64 ERA in 6 games with the team. On 14 May 2021 de Blok threw the fourth perfect game in the history of the Dutch Major Leagues, defeating Corendon Kinheim 12-0 while striking out seven.[8]
