Astros OF prospect Derek Fisher belted a pair of home runs Sunday in a victory for High-A Lancaster.
Alex Presley has accepted an assignment to Triple-A Fresno.
Evan Gattis went 1-for-4 with a triple and a run scored in Sunday's loss to the Royals.
Dallas Keuchel posted a rare poor start in Sunday's 5-1 loss to the Royals, allowing five runs on 10 hits over 6 2/3 innings.
Jose Altuve went 2-for-4 with a pair of singles in Saturday's loss to the Royals.
Scott Feldman was superb in a no-decision against the Royals on Saturday, allowing just one run on four hits over 7 2/3 innings in a game the Astros would lose 2-1 in 10 innings.
Preston Tucker went 3-for-5 with a home run on Friday, powering the Astros to a 4-0 victory over the Royals in Kansas City.
Scott Kazmir hurled seven scoreless innings on Friday, allowing just three hits and a walk as he defeated the Royals in his Astros debut.
Astros optioned OF L.J. Hoes to Triple-A Fresno.
Astros sent OF Alex Presley outright to Triple-A Fresno.
Jose Altuve went 4-for-5 and hit a walkoff homer in the bottom of the ninth as the Astros edged the Red Sox 5-4 on Thursday.
Lance McCullers pitched five innings and allowed two runs Thursday against the Red Sox.
Scott Kazmir will make his Astros' debut Friday against the Royals.
Astros acquired LHP Scott Kazmir from the Athletics for C Jacob Nottingham and RHP Daniel Mengden.
FOX Sports' Ken Rosenthal reports that the Astros have acquired starter Scott Kazmir from the A's.