By Alek Arend Adrian Gonzalez, a 15-year Major League Baseball veteran, has hit his last baseball and taken his final grounder. Gonzalez, 39, announced his retirement from baseball on Saturday. He took to Instagram to make the announcement. “I am officially announcing my retirement today,” Gonzálezwrote on Instagram. “I got to play in MLB for 15 years plus the minor leagues, Mexican summer and winter league. The Caribbean Series, the World Baseball Classic, and the Olympic games. What a blessing.” “… Baseball thank you for all you gave me. Great teammates, coaches, memories, and most important…