The 31-year-old reliever was claimed off outright waivers by the Chicago Cubs on Tuesday evening.
Righty Junior Fernández cleared waivers was assigned outright to triple-A Buffalo by the Blue Jays.
Merryweather had been designated for assignment by Toronto last week.
He had a 6.75 earned-run average in 26 games for the Blue Jays last season, striking out 23 over 26 2/3 innings.
Merryweather had a 5.64 ERA with an 0-4 record over three seasons with the Blue Jays.
He had a career 5.17 ERA over 54 innings in four Major League Baseball seasons.
This report by The Canadian Press was first published Jan. 17, 2023.
The Canadian Press