"He's pitching to his capabilities and, yes, he's definitely risen on the depth chart because of the way he's throwing the ball," Scioscia said.
Cassevah surfaced in a big situation on Sunday night in Texas, replacing Scott Downs with the Angels down by a run in the seventh inning and the bases loaded. Pinch-hitter Endy Chavez chopped a single through a drawn-in infield for two runs, and Cassevah controlled the damage with a double-play grounder.
"Bobby responded well," Scioscia said, adding that the big right-hander was a "fraction of inches from a big double play" on Chavez's chopper. "We loaded the bases again with an intentional walk and he got out of it."
Cassevah owns a power sinker in the 91-94 mph range complemented by a slider and split-fingered fastball that functions as his change of pace.
"My sinker is going really good," Cassevah said. "I'm throwing strikes, getting ahead [in counts]. The main thing is confidence. It's nice that [Scioscia] is showing the trust to use me in a situation like that."
A big-time recruit by the likes of Louisiana State as a high school quarterback in Florida, Cassevah has been throwing the split since his teens.
"I've always had big hands," he said, grinning, "so it's something that kind of came naturally."
Cassevah has a 2.67 ERA in 18 appearances, holding opponents to a .211 batting average across 27 innings.