Who has the best doubles matchup today (Monday, August 3, 2026)?

Kyle Karros (COL) — top of the board at 100, facing LHP Ian Seymour. An elite bat into a beatable arm is what pushes it to No. 1.

What are the best MLB doubles matchups today (Monday, August 3, 2026)?

The top doubles matchups on Monday, August 3, 2026: Kyle Karros (100), Fernando Tatis Jr. (100), Cole Carrigg (99), Yordan Alvarez (98), Jung Hoo Lee (94). The full board ranks every hitter in every game by doubles upside.

Did the top doubles matchup get a double on Monday, August 3, 2026?

No — Kyle Karros didn't record a double.

Which hitters have a platoon edge today?

Kyle Karros (COL) — righty bat vs LHP, .087 against lefties this year. Cole Carrigg (COL) — righty bat vs LHP, .079 against lefties this year. Yordan Alvarez (HOU) — lefty bat vs RHP, .060 against righties this year. Jung Hoo Lee (SF) — lefty bat vs RHP, .067 against righties this year. Keibert Ruiz (WSH) — lefty bat vs RHP, .086 against righties this year.

How is the doubles matchup score calculated?

It's a weighted read of the hitter's doubles per plate appearance against the hand he's facing — the last two weeks, the current season, and a two-year baseline, with recent form counting most. Then it folds in the opposing bullpen, his expected plate appearances from the batting order, and park and weather. Scores are set 0–100 across the day's slate, so the best matchup is always 100.

What does 2B/PA mean?

Doubles per plate appearance — how often a hitter reaches second on his own hit. Around .042 (about one every 24 trips) is league average. Ballpark matters more here than on most boards: deep gaps and high walls turn would-be outs and home runs into doubles.

What does the score actually mean?

Higher is better for the hitter. 80s and 90s mean the bat, the pitcher, and the park all line up. 40s and 50s mean it's neutral to tough. It's a ranking of how today's spots stack up against each other — not the odds of a double.

What's the confidence meter?

It's how much data is behind the call — sample size on both the hitter and the pitcher, plus whether the lineup's official. A high score with low confidence is a thinner read than the same score backed by a deep track record. It's not a probability of a double.

What is a platoon split (handedness split)?

Most hitters do better against the opposite hand — a lefty bat vs. a righty arm, and vice versa. That gap is the platoon split. The score leans hard on each hitter's rate against the hand he's facing today, which is why the same guy can rank very differently day to day.

What are park factors?

Parks aren't neutral. Dimensions, altitude, and weather make some easier to hit in than others. Above 1.00 bumps the score, below 1.00 trims it — same hitter, higher grade in a hitter's park than a pitcher's.

What do "2W", "SZN" and "2Y" mean?

The timeframes behind each rate: the last two weeks (recent form), the current season, and a trailing two years (a stable baseline). Recent form counts most, and small samples get pulled toward league average so a hot week doesn't fool the model.

What do "≈ est", "Due" and "Not starting" mean?

"≈ est" is a hitter we don't have splits for yet — a rookie or unmatched ID — shown at a league-baseline estimate instead of dropped. "Due" means he hasn't recorded a double in a while and profiles for regression. "Not starting" means he was projected but didn't make the official lineup, so he slides to the bottom where you can still look him up.

Can I use this for doubles props or DFS?

That's what it's built for — pre-slate research. The board surfaces which hitters have the best conditions today, and where one exists, we show the book's "1+ double" line so you can shop the price. We're not a sportsbook and we don't post picks — we show the matchup data, the line, and the result. (Best-price and all-book odds are a Pro feature.)

How accurate is the model?

We grade every board against real results, and the top of the board lands a double a lot more often than the slate as a whole. Weights get re-tuned weekly against actual outcomes on a held-out split, and since results sit next to projections, you can audit the hit rate yourself on any past date.

When do lineups update?

Projected lineups (marked "Proj") come from each team's last game. Official lineups usually drop about two hours before first pitch, and the board updates itself as they post. Batting order is a big driver, so it's worth a second look mid-afternoon — rankings shift as lineups lock.

Yes. The full board, every game page, and the daily archive are free, no login. Best-price odds and the betting tools are the paid tier.

Best MLB doubles matchups — Monday, August 3, 2026

Every hitter on the Monday, August 3, 2026 slate — ranked by doubles upside. Results show how each call played out.

How the model did — Monday, August 3, 2026

Our top 5 hitters went 1/5 (20%) on 1+ double.

Top 5

1/520%

graded

Top 10

1/1010%

graded

Full slate

13/1449%

graded

Top call Cole Carrigg came through. Kyle Karros didn't.

Final · 3–6

WSHaway

PHIhomeTop matchup93 Final · 13–7

STLaway

NYYhomeTop matchup87 Final · 4–3

PITaway

MILhomeTop matchup92 Final · 5–1

SFaway

TEXhomeTop matchup94 Final · 5–10

LADaway

CHChomeTop matchup66 Final · 3–1

TORaway

HOUhomeTop matchup98 Final · 13–9

TBaway

COLhomeTop matchup100 Final · 1–5

SDaway

AZhomeTop matchup100

Not starting34 not in the official lineup — moved to the bottom

PosSort

#Hitter · Matchup · 178 shownScore

Best MLB Doubles Matchups — Monday, August 3, 2026

Kyle Karros (COL) is the top doubles matchup on the Monday, August 3, 2026 board at 100, with Fernando Tatis Jr. (SD) and Cole Carrigg (COL) right behind. Every hitter on the slate is ranked by doubles upside — the arm and bullpen they face, batting order, park, and weather. It's the read DFS and prop players make before lock.

Top doubles spot: Kyle Karros

Kyle Karros (COL) tops the board at 100, facing LHP Ian Seymour. The righty is driving the ball at .087 2B/PA against lefties this year — and .077 over the last two weeks, an elite bat that turns into a double in about 6% of his trips. And Ian Seymour has been getting squared up by lefties lately — .097 doubles per batter faced. One catch: the bullpen behind him has been stingy to that side late. He's hitting in a spot worth about 4.5 trips, so the volume's there. No real history against Ian Seymour. It all sets up in a neutral park.

The rest of the top of the board

Fernando Tatis Jr. (SD) (100) vs RHP Brandon Pfaadt: a solid bat at .045 into an arm getting squared up by the same side (.095).
Cole Carrigg (COL) (99) vs LHP Ian Seymour: an elite bat at .064 into an arm getting squared up by the same side (.097).
Yordan Alvarez (HOU) (98) vs RHP Shane Bieber: an elite bat at .065 into an arm prone to extra-base damage from the same side (.050).
Jung Hoo Lee (SF) (94) vs RHP Cal Quantrill: an excellent bat at .061 into an arm tough to drive against the same side (.000).
Keibert Ruiz (WSH) (93) vs RHP Aaron Nola: an elite bat at .064 into an arm getting squared up by the same side (.094).
Brice Turang (MIL) (92) vs RHP Bubba Chandler: a strong bat at .050 into an arm getting squared up by the same side (.083), hot bat.
James Wood (WSH) (87) vs RHP Aaron Nola: a strong bat at .052 into an arm getting squared up by the same side (.094), due to bounce back.

Platoon edges to target

Kyle Karros (COL) — righty bat vs LHP, .087 against lefties this year.
Cole Carrigg (COL) — righty bat vs LHP, .079 against lefties this year.
Yordan Alvarez (HOU) — lefty bat vs RHP, .060 against righties this year.
Jung Hoo Lee (SF) — lefty bat vs RHP, .067 against righties this year.
Keibert Ruiz (WSH) — lefty bat vs RHP, .086 against righties this year.

Hot bats and bounce-back spots

Swinging hot bats: Brice Turang (MIL), Alec Burleson (STL), Jeremy Peña (HOU), Jordan Walker (STL), Luis Campusano (SD), and Andy Pages (LAD). Cold but due to bounce back: James Wood (WSH), Ben Rice (NYY), Manny Machado (SD), Garrett Mitchell (MIL), and Nathan Lukes (TOR).

How it played out

1 of the top 10 doubles matchups landed at least one double. Top play Kyle Karros finished with 0 doubles. We post the result next to every projection so you can grade the board yourself — and so the model gets re-tuned against what actually happened.

How to read these doubles matchups

Each score (0–100) starts with the hitter's doubles per plate appearance against the hand he's facing — weighted toward the last two weeks, then the season, then a two-year baseline. Then it layers in the bullpen, his spot in the order, and park and weather. Higher means more of it points his way. It's context, not a lock — a great spot still goes 0-for-4 sometimes, and a tough one runs into one. The edge is in stacking the odds, and since we grade every board, you can see how often the top of the list delivers.

Keep reading

Frequently asked questions

Who has the best doubles matchup today (Monday, August 3, 2026)?: Kyle Karros (COL) — top of the board at 100, facing LHP Ian Seymour. An elite bat into a beatable arm is what pushes it to No. 1.
What are the best MLB doubles matchups today (Monday, August 3, 2026)?: The top doubles matchups on Monday, August 3, 2026: Kyle Karros (100), Fernando Tatis Jr. (100), Cole Carrigg (99), Yordan Alvarez (98), Jung Hoo Lee (94). The full board ranks every hitter in every game by doubles upside.
Did the top doubles matchup get a double on Monday, August 3, 2026?: No — Kyle Karros didn't record a double.
Which hitters have a platoon edge today?: Kyle Karros (COL) — righty bat vs LHP, .087 against lefties this year. Cole Carrigg (COL) — righty bat vs LHP, .079 against lefties this year. Yordan Alvarez (HOU) — lefty bat vs RHP, .060 against righties this year. Jung Hoo Lee (SF) — lefty bat vs RHP, .067 against righties this year. Keibert Ruiz (WSH) — lefty bat vs RHP, .086 against righties this year.
Are any hitters hot or due today?: Swinging hot bats: Brice Turang (MIL), Alec Burleson (STL), Jeremy Peña (HOU), Jordan Walker (STL), Luis Campusano (SD), and Andy Pages (LAD). Cold but due to bounce back: James Wood (WSH), Ben Rice (NYY), Manny Machado (SD), Garrett Mitchell (MIL), and Nathan Lukes (TOR).
How is the doubles matchup score calculated?: It's a weighted read of the hitter's doubles per plate appearance against the hand he's facing — the last two weeks, the current season, and a two-year baseline, with recent form counting most. Then it folds in the opposing bullpen, his expected plate appearances from the batting order, and park and weather. Scores are set 0–100 across the day's slate, so the best matchup is always 100.
What does 2B/PA mean?: Doubles per plate appearance — how often a hitter reaches second on his own hit. Around .042 (about one every 24 trips) is league average. Ballpark matters more here than on most boards: deep gaps and high walls turn would-be outs and home runs into doubles.
What does the score actually mean?: Higher is better for the hitter. 80s and 90s mean the bat, the pitcher, and the park all line up. 40s and 50s mean it's neutral to tough. It's a ranking of how today's spots stack up against each other — not the odds of a double.
What's the confidence meter?: It's how much data is behind the call — sample size on both the hitter and the pitcher, plus whether the lineup's official. A high score with low confidence is a thinner read than the same score backed by a deep track record. It's not a probability of a double.
What is a platoon split (handedness split)?: Most hitters do better against the opposite hand — a lefty bat vs. a righty arm, and vice versa. That gap is the platoon split. The score leans hard on each hitter's rate against the hand he's facing today, which is why the same guy can rank very differently day to day.
What are park factors?: Parks aren't neutral. Dimensions, altitude, and weather make some easier to hit in than others. Above 1.00 bumps the score, below 1.00 trims it — same hitter, higher grade in a hitter's park than a pitcher's.
What do "2W", "SZN" and "2Y" mean?: The timeframes behind each rate: the last two weeks (recent form), the current season, and a trailing two years (a stable baseline). Recent form counts most, and small samples get pulled toward league average so a hot week doesn't fool the model.
What do "≈ est", "Due" and "Not starting" mean?: "≈ est" is a hitter we don't have splits for yet — a rookie or unmatched ID — shown at a league-baseline estimate instead of dropped. "Due" means he hasn't recorded a double in a while and profiles for regression. "Not starting" means he was projected but didn't make the official lineup, so he slides to the bottom where you can still look him up.
Can I use this for doubles props or DFS?: That's what it's built for — pre-slate research. The board surfaces which hitters have the best conditions today, and where one exists, we show the book's "1+ double" line so you can shop the price. We're not a sportsbook and we don't post picks — we show the matchup data, the line, and the result. (Best-price and all-book odds are a Pro feature.)
How accurate is the model?: We grade every board against real results, and the top of the board lands a double a lot more often than the slate as a whole. Weights get re-tuned weekly against actual outcomes on a held-out split, and since results sit next to projections, you can audit the hit rate yourself on any past date.
When do lineups update?: Projected lineups (marked "Proj") come from each team's last game. Official lineups usually drop about two hours before first pitch, and the board updates itself as they post. Batting order is a big driver, so it's worth a second look mid-afternoon — rankings shift as lineups lock.
Is MatchWiz free?: Yes. The full board, every game page, and the daily archive are free, no login. Best-price odds and the betting tools are the paid tier.

Best MLB doubles matchups — Monday, August 3, 2026

How the model did — Monday, August 3, 2026

How the board graded

Best MLB Doubles Matchups — Monday, August 3, 2026

Top doubles spot: Kyle Karros

The rest of the top of the board

Platoon edges to target

Hot bats and bounce-back spots

How it played out

How to read these doubles matchups

Keep reading

Frequently asked questions