Guy Boston doubled down on Brent Rooker over 1.5 total bases, pointing to a mouth-watering lefty split and a pitch-mix edge against Patrick Corbin. Rooker owns an eye-popping .308 average and 75 % extra-base-hit rate in just 29 plate appearances versus southpaws this season, producing 18 total bases in that tiny sample. His overall line is a more modest .248/.313, but he has still cashed this over in 16 of 28 games (57 %) and averages 2.0 TB per contest. Although Corbin’s numbers improve slightly when he faces right-handed bats, they are still shaky: a 3.97 ERA, .283 average allowed, and .435 slugging. The one red flag—only a 23.1 % XBH rate surrendered to righties—did not scare Boston off because Rooker’s batted-ball data versus Corbin’s primary offerings looks elite (343 wOBA vs sliders, 490 wOBA vs cutters). Boston added that Rooker has hit the line in eight of his last 13 meetings with Texas (62 %), calling the current two-game skid against them “due” rather than trending down. All told, Boston graded this as a plus matchup worth a unit play despite the small lefty sample.