Matt Waldron remains in command at Triple-A El Paso.
The knuckleballer won a third straight start Sunday, walking just one batter over 5⅔ innings of one-run ball in a 7-1 win at Round Rock.
Waldron (3-1, 3.66 ERA) struck out five and allowed just three hits in the start.
He has a 20-to-7 strikeout-to-walk ratio in 19⅔ innings so far in the Pacific Coast League and is holding hitters to a .274 batting average over four starts.
The rest of the bullpen combined for 3⅓ shutout innings, which included right-hander Bryan Hoeing (7.94 ERA) continuing a rehab assignment with a strikeout over a scoreless frame.
Also on a rehab assignment, Jason Heyward (.445 OPS) served as a DH for a third straight game and went 1-for-5 with a double, an RBI, a run scored and three strikeouts.
Second baseman Nate Mondou (.727 OPS) drove in three runs on three hits, including a double, and shortstop Clay Dungan (.751 OPS) hit his fourth homer.
El Paso is 36-33.
Sunday’s scoreboard
DOUBLE-A SAN ANTONIO (35-28)
Missions 8, Amarillo 5: DH Brandon Valenzuela (.837 OPS) drove in two runs on two hits, including his ninth homer. RF Moises Gomez (.717 OPS) went 3-for-5 with two doubles and an RBI. LF Kai Murphy (.648 OPS) went 2-for-3 with an RBI, two walks and two runs scored. LHP Jagger Haynes (4.01 ERA) allowed four runs in 4⅓ innings in the start. RHP Manuel Castro (3-2, 4.38 ERA) struck out five over two perfect innings in the win. RHP Tyson Neighbors (6.00 ERA) struck out two and allowed a run in two innings.
HIGH SINGLE-A FORT WAYNE (30-33)
TinCaps 5, South Bend 4: LHP Luis Gutierrez (1.50 ERA) allowed a run in six innings in the start. RHP Sean Barnett (4.91 ERA) allowed two runs in one-third of an inning. RHP Ruben Galindo (1-0, 0.00 ERA) struck out two over 1⅔ scoreless innings and RHP Garrett Hawkins (2.30 ERA) struck out two over a scoreless inning for his second save. SS Brandon Butterworth (.714 OPS) went 1-for-4 with two RBIs. CF Kai Roberts (.554 OPS) went 0-for-1 with two RBIs, a walk and a run scored. DH Leo De Vries (.756 OPS) went 1-for-2 with three walks and a run scored.
LOW SINGLE-A LAKE ELSINORE (29-34)
Visalia 10, Storm 6 (10): DH Kavares Tears (.753 OPS) drove in three runs on two hits, including his seventh homer and 10th double. 1B Victor Figueroa (.934 OPS) hit his fourth homer. 2B Ryan Jackson (.860 OPS) drove in two runs on two hits. RHP Johan Moreno (6.75 ERA) allowed a run in five innings in relief.
