The detailed diagnosis of the medical reviews planned Monday morning for outfielder Dylan Carlson and lefty Steven Matz will be disclosed later at the ballpark.
The results are already clear due to the roster.
In a series of moves that started Monday morning, the Cardinals added three new players to the active roster in advance of a two-game interleague series against Toronto. Carlson (torn left hamstring) and Matz (left shoulder impingement) have been placed on the injured list. Matz will miss at least two weeks recovering from the injury.
Matz has been placed on the 15-day IL, Carlson the 10-day IL.
In corresponding moves, the Cardinals returned outfielder Lars Nootbaar and pitcher Matthew Liberatore to the major-league roster.
Shortly before batting practice, the Cardinals placed Yadier Molina on the bereavement list so that he could attend to a family medical emergency in Puerto Rico. Molina's son injured his arm playing baseball and will have surgery Tuesday morning.
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Ivan Herrera, the Cardinals' top catching prospect, was promoted to take Molina's spot on the roster. Herrera, 21, has hit .310 with a .493 slugging percentage in 20 games for Class AAA Memphis this season.
Herrera will wear No. 47.
Earlier in the day, the Cardinals optioned righthander Angel Rondon to Class AAA Memphis. Reliever Junior Fernandez was promoted Monday afternoon to add a fresh arm to the bullpen.
Rondon's demotion comes a day after he pitched five innings and earned the win as the Cardinals completed a three-game sweep at PNC Park. Like the move a day earlier with Liberatore, the Cardinals' choice to demote Rondon was not reflective of performance ... but need. Teams will churn through fresh arms when possible, and since Rondon would not be available to pitch until Thursday, at the earliest, the Cardinals opted to option him to Triple-A.
They did the same with Liberatore after his major-league debut, and he is able return within days of that demotion due to the injury sustained by Matz.
Matz has been prescribed a shot to address the stiffness in his left shoulder. He will need at least the two weeks to rest the arm.
Decisions for promotion are often made based on availability, who is ready to provide innings, and not always on the performance. Plus, there are pitchers, like Jake Woodford, who is not yet eligible to return from the minors unless it is due to an injury, and Liberatore received that nod.
Johan Oviedo, Aaron Brooks, and Packy Naughton all pitched multiple innings over the past weekend.
Carlson joins Tyler O'Neill (shoulder impingement) on the injured list, giving the Cardinals two-thirds of their opening day outfield out of the mix. Nootbaar, a member of the opening day roster, hit three home runs Sunday for Class AAA Memphis in Gwinnett, Ga., punctuating his day with a grand slam. He had seven RBIs in the Redbirds' over and out 10-4 victory.
He had missed more than week with a sore ankle, the result of trying to leap to rob a home run and landing awkwardly on the warning track.
Adam Wainwright will start Thursday. Liberatore is set for Saturday's game.
Alex Reyes met with Dr. Neal ElAttrache in Los Angeles for another opinion on his right shoulder and the labrum injury that has kept him on the injured list all season. The team expects that he will have surgery in the near future and depending on the extent of the repair could miss the remainder of the season.
For the Triple-A Redbirds, Fernandez appeared 16 times, gone 1-2, and has a 6.25 ERA with 12 earned runs in 17 innings pitched.
1. Tommy Edman, SS
2. Nolan Gorman, 2B
3. Paul Goldschmidt, 1B
4. Nolan Arenado, 3B
5. Juan Yepez, DH
6. Brendan Donovan, RF
7. Corey Dickerson, LF
8. Harrison Bader, CF
9. Andrew Knizner, C
P: Miles Mikolas, RHP
1. George Springer, DH
2. Santiago Espinal, 2B
3. Vladimir Guerrero Jr., 1B
4. Bo Bichette, SS
5. Teoscar Hernandez, RF
6. Alejandro Kirk, C
7. Matt Chapman, 3B
8. Lourdes Gurriel Jr., LF
9. Bradley Zimmer, CF
P: Jose Berrios, RHP
Check back for more updates from the pre-game news, and of course look for complete coverage of the game and news from Busch Stadium at StlToday.com and in the pages of Tuesday Post-Dispatch.