Walker led off the 11th inning with a single and advanced to third two batters later on a bloop single by James Loney. With the infield in, Flores chopped a ground ball to second baseman Ryan Schimpf, whose throw home sailed wide as Walker slid across the plate.
Behind a dominant outing from Jacob deGrom, the Mets held a 1-0 lead for most of the night until the right-hander served up a solo home run to Yangervis Solarte in the seventh. The Mets put themselves back on top in the next half inning with a hard-hit sacrifice fly by pinch-hitter Kelly Johnson off San Diego reliever Jose Dominguez, setting up their reliable eighth and ninth inning combination of Addison Reed and Jeurys Familia.