Right-hander Trevor May, the Twins' No. 8 prospect as ranked by MLB.com, will make his big league debut against the A's on Saturday at the Coliseum.
In 17 starts for Triple-A Rochester, the 24-year-old posted a 2.93 ERA -- fourth-best in the International League -- while striking out 91 and walking 37 in 95 1/3 innings. He's averaged 10.5 strikeouts per nine innings over seven Minor League seasons.
May joined the Twins in Oakland on Friday and watched Game 2 of a four-game series from the dugout.
"To have this happen is a little bit surreal," May said. "But I had the flight here to get that out of the way. Now that I'm in the clubhouse it feels like another day at the field, but I'm excited to be here. It's just one of those cool things that happens in your life and happens only once."
May will have plenty of supporters from his hometown of Kelso, Wash., on hand for his debut, when he faces baseball's best team.
"It's definitely cool to be able to share it with my family," said May. "[The A's] are a real good team and they've shown that this year. If you're going to come up and get going, you might as well do it against the guys who are doing their jobs really well and see what you got."
May will have the unenviable tasks of facing the A's lineup and squaring off against Jeff Samardzija. Since coming over from the Cubs on July 4, Samardzija is 2-1 with a 3.09 ERA in six starts. The A's have won five of those contests.
On Monday against the Rays, the righty induced 13 ground-ball outs in seven innings. The A's ultimately won in a walk-off.
"Seems to be my M.O. since I've been here," Samardzija said. "Go out and throw some innings and then watch these guys put on a show at the end of the game. I love this team, man. I love how they play, they don't quit. Every at-bat means the world to each guy, and you see that in their emotions, how they react to each at-bat."
In his lone start against the Twins in 2012, Samardzija gave up eight runs in 3 2/3 innings.
Twins: Third-base coach Vavra to undergo hip surgery
Twins third-base coach Joe Vavra didn't go on the club's current road trip through Oakland and Houston, as he's set to undergo surgery to repair a torn labrum in his left hip.
Vavra was diagnosed with the injury during the All-Star break in mid-July and hasn't coached third since then. Since the injury he had been serving as a bench coach.
"He's going to definitely going to have a full hip replacement surgery," Twins manager Ron Gardenhire said. "By the time we get off this trip, he'll be getting his surgery. And then they said maybe a week or so. But after that, he can return to the bench. But I don't think he'll be at third this year."
Paul Molitor has moved from the bench to coach first base, while Scott Ullger has shifted from first to third in Vavra's absence.
A's: Lowrie returns with finger improved
Jed Lowrie was back in the A's lineup playing shortstop against the Twins on Friday, his first start since bruising his right index finger Monday.
Lowrie pinch-hit Thursday, but manager Bob Melvin wanted to wait another day before putting him in the field. Lowrie felt better than expected throwing Thursday.
"I probably could have played him yesterday," Melvin said Friday. "It was still a little bit uncomfortable on the throwing end. Whenever somebody tells you they feel pretty good to go, you want to give them an extra day, especially somebody as important to us as he is."
The switch-hitter kept his finger wrapped Friday.
"It's still there, but you're not waiting for it to get to 100 percent before you get back out there," Lowrie said. "You're looking for a window where you can compete and help the team win and let it get better with treatment."
• The A's have been held scoreless in the first inning in 17 consecutive games, matching the second-longest streak in Oakland history.
• Entering Saturday, the Twins had lost 11 straight games to the A's dating back to Sept. 11, 2013.
Aaron Leibowitz is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.