Harrison Bader delivered a tiebreaking hit in the eighth inning for a second straight game on Monday, hitting a two-run double to highlight the Mets’ comeback from a three-run deficit and lift New York in a 6-3 win over the visiting Pittsburgh Pirates.The Mets have won eight of 11 following an 0-5 start. The Pirates have lost four of six after a 9-2 start.The teams traded three-run rallies in the sixth inning before the Mets went ahead in the eighth against Aroldis Chapman (0-1).The left-hander struck out Francisco Alvarez to begin the inning, then whiffed Jeff McNeil but allowed him to reach by uncorking a wild pitch on strike three. DJ Stewart followed with a walk, and McNeil and Stewart pulled off a double steal before they scored on Bader’s double to left.Chapman was then ejected for arguing with plate umpire Edwin Moscoso.After Roansy Contreras took over on the mound, Bader stole third and scored an insurance run when he beat the throw home on Brandon Nimmo’s grounder to second.On Sunday, Bader beat out a bases-loaded infield single in the eighth inning to break a scoreless tie in the Mets’ 2-1 win over the Kansas City Royals.The eighth-inning rally Monday made a winner of Adam Ottavino (1-0), who struck out two in a perfect eighth. Edwin Diaz earned his fourth save with a hitless ninth.