Lynch (4-3) took the loss Friday against the Cubs, giving up four runs on three hits with two strikeouts and two walks over 1.2 innings.
Jensen went 1-for-3 with a walk, a home run and an additional run scored in Friday's 6-4 loss against the Cubs.
The Royals recalled Black from Triple-A Omaha on Friday.
The Yankees signed Garver to a minor-league contract Friday, Ted Schwerzler of minnesotasportsfan.com reports.
Lynch will start Friday's game against the Cubs, and the Royals intend to give the left-hander a longer look in the rotation, Anne Rogers of MLB.com reports.
Triple-A Omaha placed Spence on its 7-day injured list Monday due to an unspecified injury.
Lynch will start Friday's game against the Cubs, and the Royals intend to give the left-hander an opportunity in the rotation moving forward, Anne Rogers of MLB.com reports.
The Royals transferred Avila (elbow) to the 60-day injured list Thursday.
The Royals claimed Little off waivers from the Cubs on Thursday and optioned him to Triple-A Omaha.
The Royals outrighted Velazquez to Triple-A Omaha on Wednesday.
