Kansas City sent reliever Aaron Crow to Miami in exchange for Flynn and minor league pitcher Reid Redman. Crow, 28, appeared in 67 games for the Royals last season. He had a 4.12 ERA in 59 innings.
Flynn, 24, has made five major league starts, with a career 8.64 ERA. He had a 2.80 ERA in 23 Triple-A starts in 2013 but saw his Triple-A ERA rise to 4.06 in 2014.
Redman, 26, was drafted by the Rays in the 23rd round of the 2012 draft as a second baseman. He was released after one minor league season and signed by the Marlins, who converted him to a pitcher. He split time last season between High-A and Double-A and posted a 2.04 ERA and 1.005 WHIP in 61.2 innings.
Frasor, 37, signed a one-year contract with a mutual option for a second year. He was acquired by the Royals in a trade with the Rangers in July. He had a 1.53 ERA in 17.2 regular-season innings after the trade.
- Dan Gartland