Kodai Senga’s first major-league save should have ended with a souvenir tucked safely away. Instead, it ended with rookie right fielder Carson Benge throwing the baseball into the Truist Park stands and Senga reacting in disbelief. The mistake provided the funniest moment of the New York Mets’ 8-5 win over the Atlanta Braves on Monday. Senga had never recorded a save in his four major-league seasons, and the Mets only recently moved him from the rotation into short relief. He has a 4.66 ERA in the first season of a three-year, $51 million contract, and New York recently traded four other high-leverage relievers.