Fine, he didn't invent "The Wave," but he was still a very good pitcher.

Card #80 on Beckett -  https://marketplace.beckett.com/cardgallery_900/item/1988-topps-80-mark-langston_61023426

Krazy George unleashes The Wave - https://www.youtube.com/watch?v=_sqGxQoORYE 

Hall of Fame Card Corner - https://baseballhall.org/discover/CardCorner/1990-Fleer-Mark-Langston

SI Langston signs his big contract in 1989 - https://vault.si.com/vault/1989/12/11/rich-mans-game-with-the-collapse-of-collusion-and-with-clubs-prospering-as-never-before-baseball-salaries-are-now-out-of-sight

1989 SI Article about Mark - https://vault.si.com/vault/1989/04/24/a-wanted-man-when-the-talk-is-trade-the-name-heard-most-often-is-that-of-seattles-mark-langston

Is it Safe to Throw a Breaking Ball? - https://pmc.ncbi.nlm.nih.gov/articles/PMC10293565/

Mike Witt Closes out Combined No-Hitter - https://www.youtube.com/watch?v=29jZckxXli0 

Mark discusses his heart attack - https://youtu.be/KhJmU2Rjw-s?si=c_Lw8HcM8WxUhtpY&t=103 

Mark pitches in Letterman’s hallway - https://youtu.be/04zpzh22BSo?si=oVTVL0w-b1kmTz49