NEW YORK — Promoting a 21-year-old with only 12 games of Triple-A experience under his belt might be seen by some in baseball to be a panic move. The New York Mets insist that isn’t the case with center fielder A.J. Ewing, who was promoted Tuesday ahead of a series against the Detroit Tigers. “We would not have made the decision if we didn’t feel A.J. was ready to make the jump,” said Mets ...