The duo sold their first spec script, The Whiz Kid, to 20th Century Fox in 1994.
Their first produced project came in 2000, The Family Man starring Nicolas Cage and Tea Leoni.
[7] Diamond and Weissman next wrote the sci-fi comedy Evolution, helmed by Ivan Reitman.
Evolution was based on a story by Don Jakoby, who turned it into a screenplay along with Diamond and Weissman.
In 2019, the duo published a screenwriting manual, Bulletproof: Writing Scripts That Don't Get Shot Down.