Player	Pos	Bats
Bregman	3B	R
Kelly	C	R
Swanson	SS	R
Happ	LF	S
Triantos	2B	R
Dean	CF	R
Busch	1B	L
Conforto	DH	L
Amaya	C	R
Hoerner	2B	R
Ramírez	2B	S
Crow-Armstrong	CF	L
Suzuki	RF	R

Handedness: 8 RHB (Bregman, Kelly, Swanson, Triantos, Dean, Amaya, Hoerner, Suzuki), 3 LHB (Busch, Conforto, Crow-Armstrong), 2 SHB (Happ, Ramírez).

INJURIES & ROSTER NOTES

Cardinals: JoJo Romero (LHP) placed on 15-day IL retroactive to July 14, 2026.

Cubs: Jameson Taillon (RHP) activated from 15-day IL on July 20. Phil Maton (RHP) placed on 15-day IL on July 20 (right knee tendinitis).

2A: BVP -- CARDINALS BATTERS VS OPPONENT STARTER

Small sample: Jordan Walker (2 PA).

Jordan Walker has 2 career PA against Peterson -- too small to draw conclusions. No other Cardinals batter has BvP history against Peterson. Walker's .500 line (2 PA, 1-for-2) is informational only and carries no predictive weight.

2B: BVP -- OPPONENT BATTERS VS CARDINALS STARTER

No data available for this section.

No BvP data available for Cubs batters vs the Cardinals starter. No starter has been named for tonight.

2C: PLATOON SPLITS -- CARDINALS

Peterson's pronounced LHB-suppression profile (Section 2D: .564 OPS vs LHBs in 2025) makes tonight's platoon breakdown critical. Six of the nine projected Cardinals batters are LHBs. Among tonight's three RHBs, Iván Herrera leads with a .330/.455/.660 line in 124 PA vs LHP in 2025. Walker's 2025 line vs LHP (.255/.318/.347, 107 PA) is supplemented by 115 PA vs LHP in 2026 at .297 AVG and .918 OPS, suggesting improvement. Winn hit .255/.313/.349 in 163 PA vs LHP in 2025 (102 PA in 2026 at .299 AVG, .764 OPS).

Nootbaar hit only .201 in 180 PA vs LHP in 2025 -- the most challenging matchup in tonight's lineup against Peterson. Burleson (.271 in 127 PA vs LHP in 2025) and the other LHBs represent the platoon disadvantage side of tonight's order.

Note: Cardinals starter hand unavailable -- platoon queries defaulted to LHP. If tonight's starter throws RHP, these splits do not apply. 2026 columns supplemental (SSS where <30 PA).

2C: PLATOON SPLITS -- OPPONENT

Cubs batters were drawn from the active roster pool (roster_only source). No 2026 vs-LHP queries were run for Cubs players -- the 2026 columns show "--" for all rows. The 2025 splits reflect history against left-handed pitching generally, not Peterson's starter specifically.

Notable 2025 splits vs LHP: Hoerner .369/.396/.539 (149 PA) leads the group. Bregman .319/.421/.434 (133 PA) and Swanson .287/.333/.496 (138 PA) are the next-strongest matchups if they are in tonight's starting lineup. Crow-Armstrong posted only a .188 average in 188 PA vs LHP in 2025 -- his weakest platoon side and a favorable matchup for a left-handed Cardinals starter.

2026 columns show "--" for all CHC rows (roster_only lineup; no 2026 vs-LHP queries run for opponent).

2D: PITCHER PLATOON SPLITS

Peterson's 2025 platoon gap is pronounced: .743 OPS against RHBs (561 PA) vs .564 OPS against LHBs (162 PA). The 179-point OPS gap is a clear structural advantage for Cardinals RHBs tonight. Iván Herrera (DH, R), Jordan Walker (RF, R), and Masyn Winn (SS, R) are tonight's three right-handed bats and represent the primary offensive threat against Peterson. The six LHBs in tonight's projected Cardinals lineup face a steep platoon disadvantage against this left-hander.

2D-HA: PITCHER HOME/AWAY SPLITS

Peterson pitches tonight at Busch Stadium (road start for Peterson). His 2025 away ERA (3.92 in 85.0 IP) was modestly higher than his home ERA (3.76 in 83.2 IP). The gap is small and unlikely to be a decisive edge for STL, but he has allowed slightly more damage on the road. His away walk rate (34 BB in 85.0 IP) was comparable to home (31 BB in 83.2 IP).

2E: TTO SPLITS (TIMES THROUGH ORDER)

Peterson's first pass through the order (TTO1) is his most effective phase: .623 OPS in 271 PA in 2025. Results deteriorated progressively -- .734 OPS in the second pass (TTO2, 261 PA) and .771 OPS in the third pass (TTO3, 191 PA). STL's best strategy is to limit early damage and target Peterson in his second and third turns through the lineup. Watch for the first-to-second-pass transition as the inflection point -- approximately the 4th inning of a full start.

2F: INHERITED RUNNERS PROFILE

Svanson's 50.0% IR strand rate (26 IR in 2025) is well below the 68.8% league average, and his 7.23 ERA in 42.1 IP in 2026 makes him the highest-risk arm in tonight's projected Cardinals bullpen. Last night he allowed 3 runs in 0.1 IP in the 10th inning. McGreevy's 100.0% IR strand rate (3 IR in 2025) comes with a small sample, but his 3.07 ERA in 114.1 IP in 2026 supports his role as the most reliable extended-work option. O'Brien (70.0% strand, 3.67 ERA) projects as the closer; Leahy (62.1% strand, 3.55 ERA, 101.1 IP) is the primary workhorse with the deepest 2026 workload.

With no announced starter, the bullpen may need to cover 6+ innings tonight. The Svanson-vs-McGreevy fork in high-leverage late situations will be a key in-game decision point.

2G: BATTED BALL MATCHUP

Pitcher Batted Ball Profiles (Career)

Hitter Batted Ball Results (Career) -- CHC

Peterson's 55.4% career groundball rate (489 BIP) is well above the 47.1% league average, making him a pitch-to-contact pitcher who suppresses fly balls and hard contact. For Cubs batters tonight, Hoerner (.281 GB AVG), Bregman (.289 GB AVG), and Swanson (.242 GB AVG) are the groundball-heaviest options -- their profiles align with Peterson's preferred outcome. Crow-Armstrong posted a .241 GB AVG but generates more fly balls (40.7% FB in Section 2M), making him the most likely to elevate against Peterson when he does make contact; however his .188 BA vs LHP in 2025 limits the threat.

On the Cardinals' side (Section 2M): Iván Herrera (52.6% GB) and Jordan Walker (48.9% GB) are the heaviest groundball hitters. Both are right-handed, so Peterson's platoon disadvantage against RHBs applies even as his groundball rate suppresses their power. Extra-base hits from these two are most likely when they elevate against his profile.

2H: BATTERY PAIRING

No data available for this section.

No battery data is available -- the Cardinals starter is TBD. Per the projected lineup, Jimmy Crooks (C, order 7) is tonight's catcher. Note: Iván Herrera is listed at DH (order 2) in tonight's projection and is not catching tonight; Crooks is behind the plate.

2I: BASERUNNING MATCHUP

2026 Stolen Base Attempts -- Cubs Active Roster

Crow-Armstrong (35 SB), Hoerner (29 SB), and Swanson (20 SB) represent a top-three base-stealing threat in tonight's Cubs lineup. With a TBD Cardinals starter, the pitcher-catcher pairing is unknown and the hold-on-runners tendencies are uncertain -- expect early stolen-base attempts, particularly from Crow-Armstrong and Hoerner in the leadoff spots. Swanson's 87.0% success rate in 2026 makes him the most efficient of the three when he does attempt to run.

2J: DEFENSIVE CONTEXT

Masyn Winn (SS, 129 G, 0.994 Fld%) is one of the Cardinals' most reliable defenders in the infield. Lars Nootbaar (LF, 107 G, 1.000 Fld%) and Jordan Walker (RF, 108 G, 0.981 Fld%) anchor the outfield corners. Nathan Church (CF, 18 G, 1.000 Fld%) is tonight's projected center fielder. Note: Iván Herrera (C, 14 G in the table) is projected at DH (order 2) tonight and is not behind the plate; Jimmy Crooks (C, 14 G, 1.000 Fld%) is catching.

2K: BALLPARK CONTEXT & HEAD-TO-HEAD

The Cardinals went 5-8 against the Cubs in both 2025 and 2023, but 7-6 in 2024 and 13-6 in 2022. Tonight is Game 1 of a 4-game series -- the Cubs enter 7.0 games ahead of STL in the NL Central and on a 59-46 pace.

2L: BATTER K%/BB% PROFILE

Cardinals

2026 K%/BB% columns are supplemental reference for players with ≥120 PA in 2026 (Burleson 442, Herrera 464, Walker 439, Winn 397 meet threshold; Nootbaar 156, Church 281 above threshold; Crooks 87 below). League average: 22.2% K, 8.9% BB.

Cubs

Among Cardinals regulars tonight, Iván Herrera (17.2% K% in 2026, 464 PA) leads the right-handed bats in contact quality -- below league average K% with an 11.0% BB%. Walker's 2026 K% is 24.6% (439 PA) -- above league average but improved from his 31.8% career mark. Burleson (15.6% K% in 2026, 442 PA) is the best contact bat on the Cardinals side, making him a key two-strike resource against Peterson's groundball attack.

For the Cubs, Hoerner's 7.6% career K% (8.3% in 2026, 459 PA) is exceptional -- he does not strike out. Bregman (14.1% career, 16.2% in 2026) and Kelly (19.0% career, 17.1% in 2026) are the next-most-difficult outs in tonight's lineup. At the other end, Happ's 31.2% K% in 2026 (436 PA), Swanson's 22.7% (392 PA), and Crow-Armstrong's 26.3% (460 PA) represent higher-strikeout risk if the Cardinals starter can generate chase swings.

2M: BATTER BATTED BALL PROFILE

Cardinals

Career batted ball data (Retrosheet). League average GB%: 47.1%.

Cubs

Peterson's 55.4% groundball rate (Section 2G) suppresses fly-ball contact across the lineup. Iván Herrera (52.6% GB) and Jordan Walker (48.9% GB) are the Cardinals' heaviest groundball hitters -- both profile-aligned with Peterson's strength. Nathan Church (67.6% GB) is the most extreme groundball bat in tonight's projected Cardinals lineup; extra-base hits from Church against Peterson would require the rare elevated contact. Winn (39.6% GB) and Nootbaar (39.1% GB) are more likely to produce elevated contact when they do make contact.

For Cubs batters, most GB profiles fall in the 35-45% range. Crow-Armstrong (40.7% FB) is the outlier with the highest fly-ball tendency -- he generates more elevation than his teammates, though his .188 BA vs LHP in 2025 limits the overall threat against Peterson. Hoerner (45.9% GB) and Swanson (44.9% GB) project as Peterson's preferred outcomes when they make contact.

2N: PITCHER K%/BB% PROFILE

Peterson's career K%/BB% profile through 2025: 20.7% K%, 9.0% BB%, 2.31 K/BB ratio in 168.2 IP. His K% is near the 22.2% league average and his BB% (9.0%) is slightly above the 8.9% average -- he is not a dominant strikeout pitcher; contact and weak contact are his primary tools. In 2026 he carries an 18.2% K% and 9.4% BB% in 89.0 IP, consistent with the career profile but with slightly less swing-and-miss. His 2026 ERA (5.97) reflects a step back from his career ratios.

KEY MATCHUPS & WATCHLIST

STL Offense vs Peterson (LHP)

Iván Herrera (DH, R) vs David Peterson: No career BvP history. Herrera hit .330/.455/.660 in 124 PA vs LHP in 2025 -- the strongest split in tonight's projected Cardinals lineup. Peterson's platoon data shows .743 OPS against RHBs in 561 PA in 2025, making Herrera the highest-leverage at-bat in tonight's order. Watch Herrera's early at-bats as a game-tone indicator.

Jordan Walker (RF, R) vs David Peterson: 1-for-2 career vs Peterson (small sample only). Walker's 2025 line vs LHP: .255/.318/.347 in 107 PA. In 2026 he carries .297 AVG and .918 OPS in 115 PA vs LHP -- a notable improvement against left-handed pitching. He is the second right-handed option in tonight's projected lineup and a key target in Peterson's second and third pass through the order.

Peterson TTO pattern: Peterson's first pass through the order yielded .623 OPS in 271 PA in 2025; his second pass rose to .734 OPS and third to .771 OPS. If STL can keep the game close through Peterson's first time through the lineup, the second and third passes -- roughly innings 4 through 6-7 -- represent the prime scoring windows.

CHC Offense vs TBD Cardinals Starter

Nico Hoerner vs TBD: Hoerner hit .369/.396/.539 in 149 PA vs LHP in 2025 -- the top split in tonight's Cubs roster pool. His 7.6% career K% (8.3% in 2026) makes him the most consistent contact threat in tonight's Chicago lineup regardless of who starts for St. Louis. He is the key table-setter to neutralize in the early innings.

Alex Bregman vs TBD: .319/.421/.434 in 133 PA vs LHP in 2025. Bregman's 10.3% career BB% generates free bases even in unfavorable platoon spots -- his ability to draw walks puts runners on base for the rest of the lineup. His 11.3% BB% in 2026 is consistent with career.

Watchlist -- Cubs baserunning: Crow-Armstrong (35 SB, 81.4%), Hoerner (29 SB, 82.9%), and Swanson (20 SB, 87.0%) form an active base-stealing trio. With a TBD starter whose rhythm with Crooks is unestablished, expect early stolen-base attempts. Swanson's 87.0% success rate is the most efficient of the three when he does attempt to run. Svanson (7.23 ERA, 50.0% IR strand in 2025) vs McGreevy (3.07 ERA, 114.1 IP in 2026) is the high-leverage bullpen fork to watch in the late innings.

QUICK REFERENCE -- IN-GAME QUERIES

• How has Iván Herrera hit against left-handed pitchers in their career?
• How has Jordan Walker hit against left-handed pitchers in 2026?
• How has Nico Hoerner hit against left-handed pitchers in their career?
• What is David Peterson's OPS allowed the second time through the order in their career?
• What is David Peterson's platoon split against right-handed batters in their career?
• Who leads the Cubs in stolen bases in 2026?
• What is Matt Svanson's ERA and inherited runner strand rate in 2026?