Jimmy Rollins starts at shortstop for the first time in 15 games, since Sept. 6 in San Diego. Rollins has been limited by a sprained right index finger, appearing just three times as a pinch hitter and three times as a pinch runner in the last 14 games.
Corey Seager, who started each of the last 14 games at shortstop, moves over to third base with Justin Turner still out, the 18th start in 19 games since getting called up for his major league debut. Seager has reached base in each of his first 17 starts, setting a new Los Angeles Dodgers record.
This will be the 13th start of the season for Frias, but his first since June 30. He's starting on Wednesday in place of Zack Greinke, scratched with a sore right calf.
Frias is 5-5 with a 4.27 ERA in 15 games, including 12 starts at the major league level this season, with 40 strikeouts and 24 walks in 71⅔ innings.
Frias pitched two innings and threw 25 pitches on Sunday, his only outing since rejoining the Dodgers this month.