Eduardo Rodriguez is at his best under the bright lights. The sunshine, however, has been a different story.

The 22-year-old left-hander owns a 6-1 record and a 1.67 ERA in the nine night games he’s started for the Boston Red Sox this season, but he’s struggled mightily in afternoon starts, posting a 1-4 record and an unwieldy 10.67 ERA in six outings.

Red Sox pitching coach Carl Willis discussed these bizarre day/night splits with NESN’s Tom Caron during Sunday’s episode of “Red Sox First Pitch.” Hear what he had to say in the video above.

Thumbnail photo via Steve Mitchell/USA TODAY Sports Images