The Royals recalled Duran from Triple-A Omaha on Tuesday.
The Royals optioned Erceg to Triple-A Omaha on Tuesday.
Baez went 0-for-9 with a hit-by-pitch and a run scored while starting in both ends of Monday's doubleheader in Cincinnati.
Caglianone went 3-for-5 with two RBI and a run scored in Monday's 9-5 win over the Athletics.
Garcia went 2-for-5 with an RBI, a run scored and was caught stealing in Monday's 9-5 win over the Athletics.
Walker went 5-for-9 with two doubles, two runs and a stolen base across both games of Monday's doubleheader split with the Reds.
Pallante allowed four runs on 10 hits and one walk while striking out five batters over six innings in a no-decision against Cincinnati in Game 2 of Monday's doubleheader.
O'Brien notched a save in the first game of Monday's doubleheader versus the Reds, striking out all three batters he faced in the ninth inning.
Mathews completed four innings in Game 1 of Monday's doubleheader against Cincinnati, allowing one run on two hits and three walks while striking out seven batters in a no-decision.
Cruz threw a clean ninth inning to secure the save Monday against the Athletics.
