Before 1970, physical red cards did not exist...
Players could still be sent off, but referees did not show red cards.
So saying a red card in 1930, 1934, 1938 is technically inaccurate. (I stand to be corrected)
The first player ever sent off in World Cup history was Plรกcido Galindo of Peru in 1930.
The first player ever to actually be shown a red card at a World Cup was Carlos Caszely in 1974. Although, yellow & red cards were introduced for the 1970 tournament, the first red card shown at a World Cup came in 1974.
๐ฅ FIFA World Cup Red Cards by Tournament
๐บ๐พ1930 โ 1
๐ฎ๐น1934 โ 3
๐ซ๐ท1938 โ 5
๐ง๐ท1950 โ 0
๐จ๐ญ1954 โ 3
๐ธ๐ช1958 โ 1
๐จ๐ฑ1962 โ 9
๐ฌ๐ง1966 โ 5
๐ฒ๐ฝ1970 โ 0
๐ฉ๐ช1974 โ 3
๐ฆ๐ท1978 โ 5
๐ช๐ธ1982 โ 5
๐ฒ๐ฝ1986 โ 8
๐ฎ๐น1990 โ 16
๐บ๐ธ1994 โ 15
๐ซ๐ท1998 โ 22
๐ฐ๐ท๐ฏ๐ต2002 โ 17
๐ฉ๐ช2006 โ 28
๐ฟ๐ฆ2010 โ 17
๐ง๐ท2014 โ 10
๐ท๐บ2018 โ 4
๐ถ๐ฆ2022 โ 4
๐บ๐ธ ๐ฒ๐ฝ ๐จ๐ฆ 2026 โ 3 (Continue)