Rays manager Kevin Cash went with nine left-handers:
Normally when a manager makes a move like this, it's to gain a platoon advantage against the opposing team's starter. Right-hander Andrew Triggs has pitched just 6.1 innings this season, but he's been far more effective against lefties (.307 OPS in 17 plate appearances) than righties (1.811 in 13).
In his career, Triggs has also been better against lefties (.233/.309/.380 slash line in 337 plate appearances) than right-handers (.269/.325/.440 in 396).
The Rays (28-16) happen to have a lot of talented left-handers. They rank fifth in the AL with 4.9 runs per game.