The St. Louis Cardinals head to Truist Park on Tuesday, June 30 for a 7:15 PM ET showdown against the Atlanta Braves, with left-hander Matthew Liberatore drawing the start opposite veteran southpaw Martín Pérez. This is a meaningful mid-season road test for a Cardinals club that needs consistency from its rotation, and Liberatore's performance tonight will go a long way toward defining how seriously St. Louis can be taken in the NL Central race. Catch the action on Cardinals.TV Presented by bet365 or KMOX 1120 AM/104.1 FM.

Cardinals vs. Braves: Tuesday, June 30 Game Preview at Truist Park

Matthew Liberatore has shown flashes of genuine front-of-rotation potential, but the 24-year-old lefty has also had his share of outings where command issues derail an otherwise promising game plan. Tonight against an Atlanta lineup that, on paper, is missing some of its usual thunder — Austin Riley drops all the way to seventh in this particular batting order — Liberatore has a real opportunity to put together a quality start and give the Cardinals bullpen a night to breathe.

Worth noting on the Atlanta side: Riley batting seventh is unusual for a guy who has been one of the more dangerous run producers in the National League in recent seasons. Whether that reflects a slump, a manager's decision, or something else entirely, the Cardinals should not take it as an invitation to get comfortable. Matt Olson hitting third and Michael Harris II anchoring the four-hole still gives the Braves plenty of middle-of-the-order pop to punish any mistake pitches.

St. Louis Cardinals Starting Lineup at Atlanta

• JJ Wetherholt, 2B
• Iván Herrera, C
• Jordan Walker, RF
• Nelson Velázquez, DH
• José Fermín, 3B
• Masyn Winn, SS
• Lars Nootbaar, LF
• Blaze Jordan, 1B
• Nathan Church, CF

Keys to Watch for the Cardinals Tonight

Liberatore Must Limit Walks and Work Deep Into the Game

When Liberatore is locating his fastball and mixing his changeup effectively, he can be genuinely difficult to square up. The problem comes when the walk total creeps up and pitch counts balloon early. Against a disciplined Braves lineup that will grind at-bats, Liberatore needs to be efficient — aim for six innings and keep the offense in the game.

JJ Wetherholt Sets the Table at the Top

The rookie Wetherholt leading off is a statement of trust from the Cardinals' coaching staff. How he handles Pérez early will set the tone for the entire lineup. If Wetherholt can get on base and create problems, it puts Jordan Walker and Nelson Velázquez in favorable situations in the middle of the order.

Masyn Winn and Lars Nootbaar Need to Contribute from the Bottom Half

Winn batting sixth and Nootbaar hitting seventh means the Cardinals are asking their bottom half to be more than an afterthought. Both are capable of stringing together hard contact nights, and against a pitcher in Pérez who can be hit when his secondary stuff isn't sharp, this stretch of the order could be the difference.

Prediction: Cardinals 4, Braves 3

Liberatore delivers a solid six innings, Walker goes yard, and the Cardinals bullpen holds on late for a road win. Atlanta's lineup is shuffled enough tonight that St. Louis has a real path to a victory — but this one will go down to the late innings. Cardinals win a tight one.