Roberts has been sidelined since sliding headfirst into first base May 16.

Connor on resignation

Connor, who resigned as pitching coach Tuesday, was at home in Tennessee watching the Orioles-Blue Jays game Wednesday night. He made his first comments to the media since his resignation via a text message to The Baltimore Sun.

"First of all, I would like to thank the Orioles and especially Buck for the opportunity to be the pitching coach," Connor said. "I would also like to thank all my friends in baseball for their thoughtful messages. My health is good, my family is well. However, the intensity that is required day-to-day through the eight-month season was becoming difficult to maintain. In fairness to Buck and the pitching staff, I came to the decision it was best of all to step down. Buck has been a great friend for nearly 30 years, and I wish him and the team the very best."

Machado to be promoted

Orioles top prospect Manny Machado is expected to finish this week's first half of the season with Low-A Delmarva and play in Tuesday's South Atlantic League All-Star Game before joining High-A Frederick, likely for next Thursday's game versus Winston-Salem at Harry Grove Stadium.

The 18-year-old shortstop, selected with the third overall pick in 2010, is batting .298 with six homers, 24 RBIs and an on-base percentage of .397. He missed about a month after dislocating his kneecap running the bases May 5.

Heading into Wednesday, he was 7-for-34 (.208) with one homer and three RBIs since returning from the disabled list. He had a hit in seven of those eight games.

The great bunting Scott

Orioles lefty slugger Luke Scott had three singles Tuesday, and two were bunts toward third base with an exaggerated shift lined up on the right side of the infield. Showalter said well-timed bunts are something that Scott and other Orioles have been practicing to combat potential defensive shifts.

"I was kidding him at some point in the game, I said, 'You know, at this rate, you'll be hitting .300 by the end of this month,'" Showalter said. "It's something that he and a couple of other guys have been working real hard on, and it's nice to see him get a return on it."

Around the horn

Infielder Jonathan Schoop will play all over the field when Machado arrives at Frederick. Schoop, who hit .317 in his first 10 games with the Keys after being promoted from Delmarva, is expected to play second, short, third, left field and right field. … Double-A Bowie right-hander Dan Klein will see Dr. Lewis Yocum on Monday for another opinion on his right shoulder after an MRI was inconclusive. Yocum, the Los Angeles Angels' team doctor, performed exploratory shoulder surgery on Klein in 2009 when the pitcher attended UCLA. … The Orioles have signed 19th-round pick Dustin Ward, a left-handed pitcher from Central Arkansas. The club has signed seven of its 50 draft picks. … Left-hander Zach Britton, who last started June 8 and isn't scheduled to pitch until Friday, was available in the bullpen Wednesday, if needed.

dan.connolly@baltsun.com

twitter.com/danconnollysun

Baltimore Sun reporter Jeff Zrebiec contributed to this article.

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