MLB · Tue, Jul 7 · 9:40 PM

Diamondbacks at Padres

O/U 8.5 · RL Padres -1.5 · Petco Park

GARY'S PICK

MLB@ Padres· +102

The evening air is cooling down at Petco Park as the Diamondbacks and Padres gear up for the second game of this four-game NL West set. Arizona looks to build on yesterday's blowout, while San Diego tries to find answers in the midst of a brutal midsummer slump. My money tonight is going on the Diamondbacks on the moneyline at +102. Yes, Zac Gallen is on the bump, and yes, his recent numbers look like a horror show—surrendering 20 earned runs over his last 16.1 innings for an 11.02 ERA in his last three starts. But the market has overadjusted here, making the free-falling Padres a favorite when their own pitching situation is incredibly unstable. San Diego is forced to use Germán Márquez as an opener before handing things over to Jhony Brito for bulk relief, creating a highly volatile situation for a team that has lost nine of its last ten games. The matchups at the plate heavily favor Arizona early in this game. Márquez has struggled immensely against left-handed pitching, allowing a massive .986 OPS to lefties. That is a glaring green light for Diamondbacks hitters like Corbin Carroll and Ketel Marte at the top of the lineup to do damage from the jump. While Brito was excellent in Triple-A last month, transitioning back to the majors against an offense that just put up eight runs yesterday is a tall order. On the other side, Gallen's struggles are real, but Petco Park's pitching-friendly environment (0.92 park factor) and heavy marine air should provide a much-needed buffer for his fly-ball tendencies, helping to keep the ball in the yard. The strongest argument against backing Arizona is obviously Gallen’s collapse and the danger of San Diego's bats like Fernando Tatis Jr. exploiting his vulnerable 93.4 mph fastball. However, even if Gallen gets chased early, Arizona has a far healthier and more reliable bridge in their bullpen, with high-leverage arms like Jonathan Loáisiga (2.36 ERA), Justin Morillo (2.62 ERA), and Yimi Garcia (2.11 ERA) fully rested and ready. San Diego's middle relief is incredibly thin, and getting the ball to closer Mason Miller is going to be a massive chore for them. At +102, we are getting a stable, .500 Diamondbacks team that has thrived as an underdog against a highly tense, struggling Padres squad. Take the plus-money value with Arizona.

The matchups at the plate heavily favor Arizona early in this game. Márquez has struggled immensely against left-handed pitching, allowing a massive .986 OPS to lefties. That is a glaring green light for Diamondbacks hitters like Corbin Carroll and Ketel Marte at the top of the lineup to do damage from the jump. While Brito was excellent in Triple-A last month, transitioning back to the majors against an offense that just put up eight runs yesterday is a tall order. On the other side, Gallen's struggles are real, but Petco Park's pitching-friendly environment (0.92 park factor) and heavy marine air should provide a much-needed buffer for his fly-ball tendencies, helping to keep the ball in the yard.

The strongest argument against backing Arizona is obviously Gallen’s collapse and the danger of San Diego's bats like Fernando Tatis Jr. exploiting his vulnerable 93.4 mph fastball. However, even if Gallen gets chased early, Arizona has a far healthier and more reliable bridge in their bullpen, with high-leverage arms like Jonathan Loáisiga (2.36 ERA), Justin Morillo (2.62 ERA), and Yimi Garcia (2.11 ERA) fully rested and ready. San Diego's middle relief is incredibly thin, and getting the ball to closer Mason Miller is going to be a massive chore for them. At +102, we are getting a stable, .500 Diamondbacks team that has thrived as an underdog against a highly tense, struggling Padres squad. Take the plus-money value with Arizona.

The pick & result

Published pick: Diamondbacks ML +102
Published odds: +102
Result: Lost
Final score: 1-4

Odds are the American price printed with this pick, not a current offer. Wins, losses and pushes remain on the public record; a missing grade is not a win.

The read

Injuries noted

Padres: [NEW] Matt Waldron (SP) — Forearm (Right): Waldron (forearm) struck out one batter while allowing one run on eight hits and no walks over four innings in a rehab start Wednesday with Triple-A El Paso. (Jul 7 — 0d ago) [KNOWN] Nick Pivetta (Starting Pitcher) — Forearm (Right): Pivetta (forearm) threw a light bullpen session Saturday, MLB.com reports. (Jun 29 — 8d ago) [KNOWN] Lucas Giolito (SP) — Elbow (Right): Giolito (elbow) resumed light throwing in late June, per MLB.com. (Jul 3 — 4d ago) [KNOWN] Ramon Laureano (LF) — Hip (Right): Laureano underwent surgery Friday to repair his torn right labrum, Kevin Acee of The San Diego Union-Tribune reports. (Jun 5 — 32d ago) [NEW] Jeremiah Estrada (RP) — Knee (Right): Estrada (knee) threw a bullpen session Saturday, his first since landing on the injured list June 5, Jeff Sanders of The San Diego Union-Tribune reports. (Jul 7 — 0d ago) [KNOWN] David Morgan (RP) — Knee (Left): The Padres recalled Morgan from Triple-A El Paso on Friday. (Jun 29 — 8d ago) [NEW] Jason Adam (RP) — Shoulder (Right): Adam said Friday that an MRI on his right shoulder revealed no major structural damage, and he's hopeful to return from the 15-day injured list in early-to-mid August, MLB.com reports. (Jul 7 — 0d ago) [NEW] Freddy Fermin (C) — Head (Not Specified): The Padres placed Fermin on the 10-day injured list Friday with a head bruise, Kevin Acee of The San Diego Union-Tribune reports. (Jul 3 — 3d ago) [NEW] Randy Vasquez (SP) — Ankle (Right): no (Jul 7 — 0d ago) Diamondbacks: [KNOWN] Michael Soroka (SP) — Lower Body (Left): Soroka (glute) is expected to begin throwing bullpen sessions twice weekly starting Tuesday, MLB.com reports. (Jun 27 — 10d ago) [KNOWN] Ryne Nelson (SP) — Elbow (Right): The Diamondbacks transferred Nelson (elbow) to the 60-day injured list Thursday. (Jun 25 — 12d ago) [KNOWN] Jordan Lawlar (LF) — Hamstring (Right): Manager Torey Lovullo said June 20 that Lawlar will receive further imaging on his strained right hamstring during the All-Star break to gauge his healing, Steve Gilbert MLB.com reports. (Jun 30 — 7d ago)

The research

The dated measurements the app shows under this card — observations with their sample and source, not predictions.

STARTER FORM

Zac Gallen: 11.02 ERA over his last 3 starts
11.02
Across his last 3 starts (16.3 IP) he has been tagged for 20 earned runs — a 11.02 ERA with a 1.71 WHIP (1.57 season) against a 6.36 season mark.
German Marquez: 8.36 ERA over his last 3 starts
8.36
The last 3 times out: 14 innings, 13 earned runs, 13 hits. That 8.36 ERA runs 2.57 over his 5.79 season number.

HEAT CHECK

Manny Machado: 1.046 OPS in Last 15 Days
1.046
That 1.046 OPS spans the last 15 days (48 PA) against a .690 season baseline, a 0.356 swing. He has 18 home runs on the season. His total-bases line tonight: 1.5.

COOLING OFF

Corbin Carroll: .548 OPS in L15 — draws RHP German Marquez
.548
Corbin Carroll's .548 OPS over the last 15 days (50 PA) trails his .861 season mark, down 0.313. Tonight he draws RHP German Marquez — his weaker side: a .768 OPS vs RHP across 219 AB.

HR THREAT

Manny Machado
+400
Zac Gallen has struggled severely throughout this season, carrying a 6.36 ERA and a 1.57 WHIP. Over his last 5 starts, Gallen has been hit hard, posting an 8.78 ERA while surrendering 6 home runs in 27.2 innings.

FIRST INNING

ARI strike first: 1st-inning runs in 7 of their last 10
7/10
Arizona Diamondbacks have put up a first-inning run in 7 of their last 10 games — they jump on starters early and the YRFI side of their games has been doing the work.

BALLPARK

German Marquez owns a 10.38 ERA at Petco Park — 2.75 everywhere else
10.38
Across 3 games (13 IP) at Petco Park, German Marquez has a 10.38 ERA against 2.75 at his other parks (19.7 IP). Hitters bat .327 off him here.

SITUATIONAL

ARI's pen has logged 14.7 innings across its last 3 games
14.7
3 games, 14.7 innings out of the pen — Jonathan Loaisiga (2.7) and Kevin Ginkel (2) carried the load. SD's pen has thrown 13 over the same span.

TEAM RECORD

Diamondbacks 2-6 in Zac Gallen's last 8 starts
2-6
Diamondbacks are 2-6 in Zac Gallen's last 8 starts this season — losers of his last 3 in a row. He starts tonight.

REGRESSION

Jake Cronenworth: .179 AVG vs .222 xBA
.222
Across 142 plate appearances, Jake Cronenworth carries a .179 average versus a .222 xBA. His wOBA sits at .251 against a .297 expected (xwOBA). Statcast grades the quality of his contact rather than the results, and the expected marks sit above what he has actually posted.

FANTASY PICKUPS

Gavin Sheets
.776 OPS
Pickup vs Zac Gallen (6.28 xERA) — .776 OPS, bats 5th.

All research from this day

About this analysis

Who made it: Gary AI, an AI sports-analysis product operated by Gary A.I. LLC. No human reviewer is claimed unless one is explicitly named.
Published data: Daily picks first stored July 7, 2026 at 10:35 AM ET.
Odds record: The pick receipt shows the price printed in the published ticket. The matchup market and line ladder provide separate market context. Stored sportsbook sources: fanduel, fanatics, caesars, draftkings, betrivers, betmgm.
Accountability: Read the editorial standards, source policy, and corrections process.

Props on this game

GARY'S PICK
FERNANDO TATIS JR.TOTAL BASES OVER 1.5
MLBPadres· +100
✓ CASHED · ACTUAL 2
1. THE PICK: Fernando Tatis Jr. OVER 1.5 Total Bases (+100) 2. MATCHUP: Opposing right-handed starting pitcher Zac Gallen (RHB vs RHP). 3. THE KEY FACTOR: Zac Gallen is having a very difficult 2026 season with a 6.36 ERA and 1.57 WHIP, allowing at least 3 earned runs in eight consecutive starts. He is particularly vulnerable to right-handed batters like Tatis, allowing a .294 AVG and a high .873 OPS with 10 home runs this season. Tatis has been reliable with a .282 AVG and has cleared 1.5 total bases in 3 of his last 5 games. 4. PARK/WEATHER CHECK: Game conditions are optimal with temperatures around 78°F at kickoff and clear skies at Petco Park, which helps balls carry better than typical chilly night environments. 5. VOLUME FLOOR: Tatis bats leadoff, guaranteeing him maximum plate appearances (likely 5 PAs if the Padres' offense performs as expected against Gallen's 6.36 ERA). 6. THE RISK: Gallen regains his form to pitch a dominant game, or Tatis draws multiple walks (which do not count toward total bases) and finishes 1-for-4 with a single.
Fernando Tatis Jr.
Total Bases over 1.5
+100 · CASHED · ACTUAL 2
Padres
1. THE PICK: Fernando Tatis Jr. OVER 1.5 Total Bases (+100) 2. MATCHUP: Opposing right-handed starting pitcher Zac Gallen (RHB vs RHP). 3.
THE KEY FACTOR
Zac Gallen is having a very difficult 2026 season with a 6.36 ERA and 1.57 WHIP, allowing at least 3 earned runs in eight consecutive starts. He is particularly vulnerable to right-handed batters like Tatis, allowing a .294 AVG and a high .873 OPS with 10 home runs this season. Tatis has been reliable with a .282 AVG and has cleared 1.5 total bases in 3 of his last 5 games. 4. PARK/WEATHER CHECK: Game conditions are optimal with temperatures around 78°F at kickoff and clear skies at Petco Park, which helps balls carry better than typical chilly night environments. 5.
VOLUME FLOOR
Tatis bats leadoff, guaranteeing him maximum plate appearances (likely 5 PAs if the Padres' offense performs as expected against Gallen's 6.36 ERA). 6. THE RISK: Gallen regains his form to pitch a dominant game, or Tatis draws multiple walks (which do not count toward total bases) and finishes 1-for-4 with a single.

Every prop from this day is on the archive page.

Every pick posts before the game and is graded after, in public. My Book on this website lets you tail or fade listed calls and keeps your record separately labeled; Gary is also available as a native iOS app.

Get Gary on the App Store

Every MLB game this day The MLB record Today's MLB picks Every sport this day