The Silver Slugger Award is awarded annually to the best offensive player at each position in both the American League (AL) and the National League (NL), as determined by the coaches and managers of Major League Baseball (MLB). These voters consider several offensive categories in selecting the winners, including batting average, slugging percentage, and on-base percentage, in addition to "coaches' and managers' general impressions of a player's overall offensive value". Managers and coaches are not permitted to vote for players on their own team. The Silver Slugger was first awarded in 1980 and is given by Hillerich & Bradsby, the manufacturer of Louisville Slugger bats. The award is a bat-shaped trophy, 3 feet (91 cm) tall, engraved with the names of each of the winners from the league and plated with sterling silver.
Among third basemen, Wade Boggs has won the most Silver Slugger Awards, winning eight times with the rival Boston Red Sox (six) and New York Yankees (two). In the National League, Mike Schmidt leads with six wins; Schmidt won the first five National League Silver Slugger Awards at third base from 1980, when he led the Philadelphia Phillies to the World Series, to 1984 before his streak was broken by Tim Wallach. Yankees third baseman Alex Rodriguez has won three American League Silver Sluggers at the position, and has ten wins in his career as he accumulated seven wins at shortstop with the Seattle Mariners and Texas Rangers. Two National League third basemen have also won three Silver Sluggers. Matt Williams won the award in 1990, 1993, and 1994, when he was on pace to tie Roger Maris' home run record of 61 before the players' strike;Vinny Castilla won three awards in four years for the Colorado Rockies (1995, 1997–1998).Chase Headley and Miguel Cabrera are the most recent winners.