Conversation so far:
When did Roger Clemens join the Red Sox?
Roger Clemens was drafted 19th overall by the Boston Red Sox in 1983
How did Roger Clemens perform in his first season on the Red Sox?
Roger Clemens quickly rose through the minor league system, making his major league debut on May 15, 1984.
How much was Roger Clemens paid by the Red Sox?
How long was Clemens on the Red Sox?
Roger Clemens was on the Red Sox for 12 years
What team did Roger Clemens join after the Red Sox?
Roger Clemens left and signed with the Toronto Blue Jays.
Why did Roger Clemens leave the Red Sox?
What was Roger Clemens' failure against Oakland in 1990?
Roger Clemens postseason failure came in the second inning of the final game of the 1990 ALCS against the Oakland Athletics, he was ejected for arguing with umpire Terry Cooney
Did the Red Sox win against Oakland in 1990 during the final game of the 1990 ALCS against the Oakland Athletics, when Roger Clemens was ejected for arguing with umpire Terry Cooney?
The Boston Red Sox rebounded with success in 1988 and 1990, clinching the AL East Division each year, but were swept by the Oakland Athletics in each ALCS matchup

Question: What did this loss do to Clemens' career?
Self-contained rewrite: What did this loss against Oakland in 1990 during the final game of the 1990 ALCS do to Clemens' career?