Matt Grace's pitch grazed off Dietrich's right (or lead) forearm, redirected and smacked his left forearm, inches from his hand and wrist. Dietrich is sporting two bruises but insists he should be ready, if needed, on Saturday at the Nationals.
"That's a first," Dietrich said. "I got hit on both forearms with one pitch."
Dietrich explained why he didn't go to first base, noting he knew it was his last at-bat.
"I figured a pinch-runner would come in," he said.
It was the second time on the night that the 28-year-old was hit by a pitch. He was struck by Jeremy Hellickson in the first inning on his right hip area, but took his base and later scored.
"Nothing serious," Dietrich said. "You don't want that to happen this close to the season."
Dietrich is batting .370 with four home runs and 10 RBIs this spring.
After serving primarily as an infielder since 2013, Dietrich has switched to left field, and he has played both corner spots in Spring Training. Eric Campbell replaced him in right field.
The Marlins have gone through a rough stretch with injuries. Catcher J.T. Realmuto (low back bruise), shortstop JT Riddle (right shoulder), third baseman Martin Prado (right knee) and right-hander Dan Straily (right forearm inflammation) are all recovering and trying to avoid opening the season on the disabled list.
"You feel like the only thing you can accomplish now is getting somebody hurt," manager Don Mattingly said. "It's just too close. Anything that happens now, you know that it just messes with your roster."
Dietrich has a knack for being hit by pitches, having been plunked 18 times in 2017; in 2016 he paced the Majors with 24. In 459 big league plate appearances, he's been hit 72 times.
"I'm used to getting hit, but I'd never got hit twice with one pitch," Dietrich said. "Other than that, I'm OK."