Vin Mazzaro was once penciled in as part of future A’s rotations.
He was a 2005 third-round pick of Oakland and in the rotation in 2009-2010, making 35 starts, but he was traded to the Kansas City Royals for outfielder David DeJesus after the 2010 season.
Mazzaro beat the A’s 2-0 on Sunday, holding them to four singles in six innings, while walking three and striking out three.
Jonathan Broxton, who logged his 13th save, Kelvin Herrera and Greg Holland completed the shutout.
Mazzaro (2-0) acknowledged there was “a little bit” more satisfaction in beating the team that traded him.
“It makes it a little bit better against my former team,” Mazzaro said.
The A’s loaded the bases in the first inning on Collin Cowgill and Josh Reddick singles and a Kila Ka’aihue walk, but they failed to score off Mazzaro. Brandon Inge’s grounder to shortstop Alcides Escobar ended the inning and threat.
The Royals put two runners on base in the bottom of the first with an Alex Gordon walk and a Billy Butler single, but came away empty.
“I thought we had our opportunities early and we didn’t score,” A’s manager Bob Melvin said. “Mazzaro got better as the game went along.”
Tommy Milone (6-5), who threw eight shutout innings against the Royals in his A’s debut on April 9, allowed two runs on eight hits to take the loss for the A’s. He struck out six, matching his career high.
Eric Hosmer homered to straight-away center to lead off the Royals’ second inning for the first run.
The Royals got another run in the fifth when Johnny Giavotella singled home Jarrod Dyson, who led off the inning with a single and stole second.