Hitting fourth in a Major League Baseball lineup comes with a simple job description: drive in runs. Whether that comes from hitting the ball over the fence or just finding enough grass to evade defenders, the cleanup man is largely responsible for the team’s offensive production.
Of course, driving in runs is dependent on the guys in front of you getting on base. For some portions of Mariner history (see: 1993-2003), that wasn’t much of an issue. For other periods (see: 2010-13) it was a vast hellscape of one and two hitters who couldn’t get on base and middle-of-the-order guys who probably wouldn’t have knocked them home anyway.
Nevertheless, each year someone must be Seattle’s primary cleanup hitter. To define primary, this is simply the person who batted fourth the most times in a season. Ironically, the two highest RBI totals for a single season of Mariner history came from a man who was hitting third. That man appears on this list as a cleanup hitter for a season in which he collected just 57 RBI. Life is pain.