The Mets had won three consecutive games as they began a doubleheader with the Arizona Diamondbacks on Sunday, but teams that make errors and accumulate strikeouts in bulk usually struggle to sustain winning streaks. Over the course of the afternoon at Shea Stadium, the Mets generated 27 strikeouts — a record for a doubleheader of nine-inning games — and 8 errors. They lost twice, their record sinking to 11-14, and dropped four games out of first place in the National League East Division, less than what was expected from a team with a $120 million payroll, the second largest in baseball.