agency after the season, turning down the Red Sox's offer of salary arbitration. New York Mets (2010–2012) On December 29, 2009, Bay agreed to a four-year, $66 million contract with the New York Mets, which also included a vesting option for a fifth year. General manager Omar Minaya, who engineered the deal, originally traded Bay to the Mets in 2002 when he was GM for the Montreal Expos. On January 5, 2010, Minaya and Jeff Wilpon held a press conference at Citi Field in which Bay was presented with his uniform, number 44 for the Mets. The Red Sox received the 39th (Anthony Ranaudo) and 57th (Brandon Workman) selections in the 2010 Major League Baseball draft as compensation. On April 27, in the first game of a double header against the Los Angeles Dodgers, Bay hit his first home run as a member of the New York Mets in the bottom of the fourth inning to give the Mets a 2–0 lead. The Mets went on to win the first game, 4–0, and win the second game, 10–5. In his first season with the Mets, Bay played in only 95 games. He suffered a concussion in a game against the Dodgers, when he ran into a fenced wall and his head jerked back. He finished his season with a .259 batting average, only six home runs (he hit 36 the year before), 47 RBI, and scored 48 runs. Bay began 2011 on the disabled list with a rib injury and returned to the Mets on April 21 in a game against the Houston Astros. On that day (a 9–1 Mets win), Bay batted and scored in the eighth on a rare four-base error when Hunter Pence failed to catch Bay's fly ball; David Wright, on first base from a walk, scored ahead of him. Bay also had a ground-rule double and scored a run in the fourth inning. On June 28, 2011, Bay hit a grand slam off of Detroit Tigers pitcher Daniel Schlereth. It was the first grand slam by the Mets since Ángel Pagán hit one on August 1, 2009. On August 8, Bay hit his 200th career home run against the San Diego Padres, becoming the third Canadian MLB player after Larry Walker and Matt Stairs to reach this milestone. Bay hit another grand slam in September en route to winning his fifth career National League Player