Is Marcus Semien Over 0.5 Hits a good bet today?

PropsBot's AI scores this Marcus Semien hits prop using a Confidence Score (0-100, model agreement) and an Edge Score (gap between modeled probability and sportsbook implied probability). The article above details Marcus Semien's recent form, the matchup against today's opponent, and the best available odds across major sportsbooks. Read the full breakdown before placing any bet.

What is the best hits for Marcus Semien's Over prop?

The article lists current sportsbook odds — typical books include FanDuel, DraftKings, BetMGM, Caesars, Novig (sports exchange), and Hard Rock Bet (Ohio). The best price moves throughout the day; the article reflects the line live at publish time. Always line-shop before placing a bet.

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Marcus Semien Over 0.5 Hits — MLB Picks Today, May 19 (65% AI)

Name: PropsBot.AI
Availability: InStock
Author: David Reilich

By David

Published May 19, 2026

Also on the MLB slate today, an MLB pick today, Tuesday, May 19, 2026, is Marcus Semien Over 0.5 Hits (NYM @ WAS, 6:46 PM ET). PropsBot’s AI rates the pick at 65.4% Confidence with a 9.4% Edge Score, meaning the modeled probability sits about 9 points above the implied probability priced into the market. Best available price: BetMGM -190.

Below is the full breakdown — Confidence Score, Edge Score, sportsbook odds comparison, and historical hit rate data — so you can make a data-backed decision before the 6:46 PM ET first pitch.

Window	Over Hit Rate	Sportsbook	Line	Odds
L5 / L10 / L20	80% / 70% / 60%	BetMGM	0.5 Hits	-190
Season	55%	BetMGM	0.5 Hits	-190
H2H vs WAS	57%	BetMGM	0.5 Hits	-190

Is Marcus Semien a good Over 0.5 Hits bet vs Foster Griffin on May 19?

By David Reilich, Founder of PropsBot.AI · Last updated Tuesday, May 19, 2026 · Methodology · Editorial standards

Want more picks? PropsBot’s AI generates 50+ scored player prop predictions every day across NBA, MLB, NHL, and NFL. Try PropsBot free →

Why Marcus Semien Over 0.5 Hits vs Foster Griffin?

PropsBot’s AI models assigned a 65.4% Confidence Score to Marcus Semien over 0.5 Hits tonight. That threshold qualifies as High Confidence in PropsBot’s framework. The pick carries a 9.4% Edge Score, with a -0.1% Confidence Gap between modeled and implied probability.

Semien lit up the recent windows: 4 of his last 5, 7 of his last 10. The contact profile (.228 AVG, 79.0% Contact%) is middling, but the Foster Griffin matchup (LHP, 23.0% opponent K rate, .253 opponent xBA) is exactly the spot he tends to bank singles. PropsBot’s models flagged a 9.4% Edge — the biggest gap between modeled and implied on the slate.

Historical Performance at 0.5 Hits

Semien hit safely in 4 of his last 5, 7 of his last 10, and 12 of his last 20. Head-to-head vs Griffin (57% Over rate) is the second-tier read; season at 55% is the floor. The L5 run is the freshness signal the model is over-weighting.

Matchup Context: NYM @ WAS

NYM at WAS, Game O/U 9.0 — the highest implied total of any MLB pick today. Implied Runs at 5.1 for the road side. Griffin’s .244 AVG vL and .259 wOBA vL are the contact-environment levers. Semien’s 85.9 mph Exit Velo isn’t loud, but the 23.1% LD% and .273 BABIP say he’s been finding holes.

Best Line Available

BetMGM has the Over at -190. Implied probability 66%, modeled north of 75% — the 9.4% Edge is the largest on the board. If Foster Griffin gets pulled early (he’s typically a 4-5 IP starter), the value drops — the read is for the first 3 ABs.

How PropsBot Grades MLB Hits Picks

Every PropsBot pick is graded the morning after the game by an automated result-tracker that pulls box-score data from MLB.com / NHL.com / NBA.com / NFL.com and marks the pick Hit, Miss, Push, or Voided (for player non-appearance). The graded outcome is appended to the post via a green/red callout block, and the per-pick history is published at Performance Methodology. Every entry includes the date, line, book, and graded outcome — nothing is retroactively edited.

How PropsBot Models MLB Hits Props

Multiple AI models score the prop, then their consensus is summarized into a single Confidence Score and an Edge Score — full methodology at /performance-methodology/.

More MLB Player Props — May 19, 2026

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Glossary — key terms in this pick

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Sources & Verification

Career stats: Marcus Semien on MLB.com
Advanced metrics: Statcast page for Marcus Semien
Game info: NYM at WAS on May 19, 2026

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PropsBot is a research and analytics tool — not a picks service. Picks reflect AI model output as of May 19, 2026 and may be updated; see our Corrections Policy for how we handle changes after publication. Odds are subject to change.

Today’s Other AI Picks — May 19, 2026

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Tagged AI Picks, Hits, Marcus Semien, MLB, MLB Picks Today, Player Props