Complex sentence: Hurst, who would have been the Most Valuable Player of the 1986 World Series if the Red Sox hadn't blown Game 6, was working on short rest, even after receiving an extra day off when Game 7 was pushed back a day due to rain.
Split into simpler sentences: Hurst, who would have been the Most Valuable Player of the 1986 World Series if the Red Sox hadn't blown Game 6. Hurst was working on short rest, even after receiving an extra day off when Game 7 was pushed back a day due to rain.