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7/21/2014 1:47 A.M. ET

Lynn to start Wednesday against Rays

ST. LOUIS -- Following Sunday night's 4-3 loss to the Dodgers, Cardinals manager Mike Matheny confirmed that the club will start Adam Wainwright and Lance Lynn, in that order, during the team's upcoming series against the Rays.

Matheny had been mum about the team's pitching plans pregame, wanting to first see whether Shelby Miller would get used out of the bullpen in the series finale. He did, throwing 17 pitches in the appearance and thereby finalizing the Cardinals' decision to turn to Lynn on Wednesday.

The Cardinals have the flexibility to stick with a four-man rotation through the end of the month because of the high concentration of off-days. Lynn, who started the Cardinals' first game of the second half, will be pitching on his normal four days' rest.

Miller was slated to throw on Sunday as the Cardinals were prepared to have him throw a bullpen session if he wasn't used in the game. That was to protect against too long of a period of inactivity. As it was, Miller got his work in during the game, allowing two hits and a walk while facing five batters in his first relief appearance of the season.

"We're trying not to throw him out there for a lot of pitches on a consistent basis," Matheny said. "We want to get him strong and feeling good again. We need him. We're going to need him. This was in place of a bullpen today, but we needed it."

Bourjos seeing results from adjustments

ST. LOUIS -- Though he's only made two starts this month, Peter Bourjos has quietly been piecing together his best stretch of the season.

He drew the start against Dodgers left-hander Clayton Kershaw on Sunday and responded with a multi-hit game that included a game-tying home run. That makes him 8-for-16 in July, a month during which Bourjos has seen himself slide into a role of being a routine late-game defensive placement. He also swiped two bases on Sunday and added a sliding defensive play to his strong night of work.

Knowing the backlog of outfielders on the roster, Bourjos is trying to shine whenever he gets the opportunity to play. He made a strong assertion after Sunday's loss, too, saying that he feels like his swing "is the best it's ever been."

"I feel really good," Bourjos added. "I'm going right to the ball and I know where the barrel is at, and I'm making pretty good contact."

The improved feel, Bourjos said, is the result of some mechanical tweaks he made about four weeks ago during the team's three-day stopover in Colorado. He's made only three starts since then, which has afforded Bourjos plenty of time to practice those adjustments in the batting cage.

"It's always a tough situation when you're not in there every day," Bourjos said. "I kind of went through this in 2012 in Anaheim, very similar. I think that's helped me out a little bit going through that already and trying to stay positive and continue to work."

While the current roster composition likely won't allow for Bourjos to push his way into the lineup much more often, he can continue to increase his value off the bench by adding an improved swing to the speed and defensive skills he already touts.

"Bourjos is a weapon when he gets on base," teammate Mark Ellis said. "His speed is dynamic. His play in center field is great. He's one of those guys where you watch him and you just wait for the day where he's going to explode into a monster ballplayer. I think he's inching his way closer to that."

Worth noting

• A day after a collision knocked him out of Saturday's win, Matt Holliday passed an additional round of tests and returned to the lineup Sunday night. The Cardinals had already ruled out a possible concussion.

• Left-hander Kevin Siegrist (left forearm strain) is expected to make a multiple-inning relief appearance on Monday as part of his rehab assignment with Double-A Springfield. If all goes well, this could be his last outing before being activated from the disabled list.

• Starters Zach Petrick and Boone Whiting pitched consecutive seven-inning shutouts in Memphis' doubleheader sweep over Colorado Springs on Saturday. Randal Grichuk's solo homer accounted for the Game 1 run. Xavier Scruggs drove home both runs in Game 2 with his 10th home run of the season.

Jenifer Langosch is a reporter for MLB.com. Read her blog, By Gosh, It's Langosch, and follow her on Twitter @LangoschMLB. This story was not subject to the approval of Major League Baseball or its clubs.