The Red Sox’ race to 50 wins has featured a cast of characters filling in a different role in what seems like every victory earned. Brandon Snyder’s turn to do his small part came yesterday and he responded with a 2-for-4 showing with two RBI and a slick defensive play in the eighth inning from third base to chip in during a 5-4 victory over the Toronto Blue Jays at Fenway Park. Snyder, who has played 93 percent of his 848 games in the minor leagues during his nine-year career, is up from Triple A as a right-handed bat who can play a number of infield positions while shortstop Stephen Drew rests a tight hamstring on the bench and third baseman Will Middlebrooks works on his game at Pawtucket (he hit two home runs yesterday). Snyder understands his situation. He is not trying to put extra pressure on himself when he does get the chance to play. “It’s not as much as putting pressure on myself; it’s just that we want to win and you want to be a part of it,” Snyder said. “You don’t feel like you have to do everything; you are just trying to do the little things to help the team keep rolling.” Snyder picked up his first hit as a member of the Red Sox in the second inning when he roped a Mark Buehrle offering off the bottom of the scoreboard, knocking in two for a 3-0 lead. In the eighth, Snyder snared a J.P. Arencibia grounder down the third base line with the backhand, got to his feet and fired across the diamond for the out.