Complex sentence: Red Sox manager Terry Francona and Yankees manager Joe Torre argued that their players could play under the conditions, despite the fact that, even if the rain let up, both teams would still be left with a wet, soggy field to play on.
Split into simpler sentences: Red Sox manager Terry Francona and Yankees manager Joe Torre argued that their players could play under these conditions. But even if the rain let up, then both teams would still be left with a wet, soggy field to play on.