Every team is in action on Tuesday in Major League Baseball, which means there are plenty of MLB betting opportunities.
However, the value doesn’t always last long, so let’s stop wasting time and dig right into today’s MLB best bets, which include prop picks and predictions for Diamondbacks vs Dodgers, Mets vs Red Sox, Braves vs Nationals and Phillies vs Rockies.
Find all of our Tuesday MLB best bets — and a parlay of all our picks — below.
[quickslipbasic bookname=”Fanatics” booklogo=”https://assets.actionnetwork.com/573837_FanaticsSportsbook20ALT.png” image=”https://images.actionnetwork.com/blog/2025/05/Screenshot-2025-05-20-at-7.15.08%E2%80%AFAM.png” buttontext=”Parlay These Picks Instantly!” buttonlink=”https://www.scoresandodds.com/all/parlay?quickslip=1&onelink=/5kut/4vcwv3ks?sharedBy=QS_0105&ref=10001″][/quickslipbasic]
MLB Picks, Props, Predictions, Best Bets — Tuesday, May 20
| Game | Time (ET) | Pick |
|---|---|---|
| [teammatchup link=”#1″ firstfullname=”New York Mets” firstlogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-new-york-mets.png” secondfullname=”Boston Red Sox” secondlogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-boston-red-sox.png”][/teammatchup] | 6:45 p.m. | |
| [teammatchup link=”#2″ firstfullname=”Atlanta Braves” firstlogo=”https://static.sprtactn.co/teamlogos/mlb/100/atl.png” secondfullname=”Washington Nationals” secondlogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-washington-nationals.png”][/teammatchup] | 6:45 p.m. | |
| [teammatchup link=”#3″ firstfullname=”Philadelphia Phillies” firstlogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-philadelphia-phillies.png” secondfullname=”Colorado Rockies” secondlogo=”https://static.sprtactn.co/teamlogos/mlb/100/col.png”][/teammatchup] | 8:40 p.m. | |
| [teammatchup link=”#4″ firstfullname=”Arizona Diamondbacks” firstlogo=”https://static.sprtactn.co/teamlogos/mlb/100/ari.png” secondfullname=”Los Angeles Dodgers” secondlogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-los-angeles-dodgers.png”][/teammatchup] | 10:10 p.m. | |
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Specific betting recommendations come from the sportsbook offering preferred odds as of writing. Always shop for the best price using our MLB Odds page, which automatically surfaces the best lines for every game.
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[relatedarticle articleimageurl=”https://images.actionnetwork.com/blog/2025/05/teoscarhernandez.jpg” linktext=”Diamondbacks vs Dodgers Prediction, Picks, Odds for Tuesday, May 20″ link=”https://www.actionnetwork.com/mlb/arizona-diamondbacks-vs-los-angeles-dodgers-prediction-picks-odds-tuesday-may-20-qs”][/relatedarticle]
[anchor name=”1″][/anchor]
[subheader sizedown=”false” text=”Bet Labs’ Mets vs Red Sox Best Bet: Weather Suggests Under Play”][/subheader]
[gameheader haspick=”true” picktext=”Under 9 (-110)” league=”mlb” awaylogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-new-york-mets.png” awayname=”New York Mets” awayslug=”new-york-mets” homelogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-boston-red-sox.png” homename=”Boston Red Sox” homeslug=”boston-red-sox” date=”Tuesday, May 20″ time=”6:45 p.m. ET” network=”MLB.TV” bookname=”ESPN BET” bookprimarylogo=”https://images.actionnetwork.com/blog/2023/11/ESPNBET-rect-2colorway-e1700601975338.png” bookreviewslug=”espn-bet”][/gameheader]
By Bet Labs
Fenway Park is traditionally a hitter-friendly stadium, but when wind blows inward, it significantly suppresses offensive output — particularly fly balls that would otherwise clear the Green Monster or drop in for extra-base hits.
In games played at Fenway with inward wind conditions, both regular and postseason data show that the totals are often set too high. That creates a profitable contrarian angle, so we can take advantage of this weather-based edge, which isn’t always fully baked into the market.
Pick: Under 9 (-110)
| [teammatchup link=”#1″ shadow=”true” firstfullname=”New York Mets” firstlogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-new-york-mets.png” secondfullname=”Boston Red Sox” secondlogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-boston-red-sox.png”][/teammatchup] | [teammatchup link=”#2″ shadow=”true” firstfullname=”Atlanta Braves” firstlogo=”https://static.sprtactn.co/teamlogos/mlb/100/atl.png” secondfullname=”Washington Nationals” secondlogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-washington-nationals.png”][/teammatchup] | [teammatchup link=”#3″ shadow=”true” firstfullname=”Philadelphia Phillies” firstlogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-philadelphia-phillies.png” secondfullname=”Colorado Rockies” secondlogo=”https://static.sprtactn.co/teamlogos/mlb/100/col.png”][/teammatchup] | [teammatchup link=”#4″ shadow=”true” firstfullname=”Arizona Diamondbacks” firstlogo=”https://static.sprtactn.co/teamlogos/mlb/100/ari.png” secondfullname=”Los Angeles Dodgers” secondlogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-los-angeles-dodgers.png”][/teammatchup] |
[anchor name=”2″][/anchor]
[subheader sizedown=”false” text=”Will Priester’s Braves vs Nationals Best Bet: Back Strider”][/subheader]
[gameheader haspick=”true” picktext=”Spencer Strider Over 5.5 Strikeouts (-105)” league=”mlb” awaylogo=”https://static.sprtactn.co/teamlogos/mlb/100/atl.png” awayname=”Atlanta Braves” awayslug=”atlanta-braves” homelogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-washington-nationals.png” homename=”Washington Nationals” homeslug=”washington-nationals” date=”Tuesday, May 20″ time=”6:45 p.m. ET” network=”MLB.TV” bookname=”DraftKings ” bookprimarylogo=”https://assets.actionnetwork.com/477013_DraftKings@1x.png” bookreviewslug=”draftkings”][/gameheader]
By Will Priester
Washington has been a pesky team, but I want to hop on some of these achievable lines for Spencer Strider before they start coming in at 6.5-8.5 strikeouts.
Strider is still one of the most electric pitchers in baseball and could easily get to six if he’s dialed in. This is more of a strategy play due to the lower strikeout number that Strider’s receiving today.
Pick: Spencer Strider Over 5.5 Strikeouts (-105)
| [teammatchup link=”#1″ shadow=”true” firstfullname=”New York Mets” firstlogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-new-york-mets.png” secondfullname=”Boston Red Sox” secondlogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-boston-red-sox.png”][/teammatchup] | [teammatchup link=”#2″ shadow=”true” firstfullname=”Atlanta Braves” firstlogo=”https://static.sprtactn.co/teamlogos/mlb/100/atl.png” secondfullname=”Washington Nationals” secondlogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-washington-nationals.png”][/teammatchup] | [teammatchup link=”#3″ shadow=”true” firstfullname=”Philadelphia Phillies” firstlogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-philadelphia-phillies.png” secondfullname=”Colorado Rockies” secondlogo=”https://static.sprtactn.co/teamlogos/mlb/100/col.png”][/teammatchup] | [teammatchup link=”#4″ shadow=”true” firstfullname=”Arizona Diamondbacks” firstlogo=”https://static.sprtactn.co/teamlogos/mlb/100/ari.png” secondfullname=”Los Angeles Dodgers” secondlogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-los-angeles-dodgers.png”][/teammatchup] |
[anchor name=”3″][/anchor]
[subheader sizedown=”false” text=”Will Priester’s Phillies vs Rockies Best Bet: Trust Luzardo, Fade Rockies”][/subheader]
[gameheader haspick=”true” picktext=”Jesus Luzardo Over 6.5 Strikeouts (+128)” league=”mlb” awaylogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-philadelphia-phillies.png” awayname=”Philadelphia Phillies” awayslug=”philadelphia-phillies” homelogo=”https://static.sprtactn.co/teamlogos/mlb/100/col.png” homename=”Colorado Rockies” homeslug=”colorado-rockies” date=”Tuesday, May 20″ time=”8:40 p.m. ET” network=”MLB.TV” bookname=”FanDuel” bookprimarylogo=”https://assets.actionnetwork.com/122955_FanDuelSportsBook@1x.jpg” bookreviewslug=”fanduel”][/gameheader]
By Will Priester
This is a wash, rinse and repeat situation for me.
The Rockies continue to strike out at an incredibly high clip, so getting plus money on Jesus Luzardo in this spot feels like a gift. Yes, we are asking for seven strikeouts, but I think this is extremely doable and worth the cost of admission.
Pick: Jesus Luzardo Over 6.5 Strikeouts (+128)
| [teammatchup link=”#1″ shadow=”true” firstfullname=”New York Mets” firstlogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-new-york-mets.png” secondfullname=”Boston Red Sox” secondlogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-boston-red-sox.png”][/teammatchup] | [teammatchup link=”#2″ shadow=”true” firstfullname=”Atlanta Braves” firstlogo=”https://static.sprtactn.co/teamlogos/mlb/100/atl.png” secondfullname=”Washington Nationals” secondlogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-washington-nationals.png”][/teammatchup] | [teammatchup link=”#3″ shadow=”true” firstfullname=”Philadelphia Phillies” firstlogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-philadelphia-phillies.png” secondfullname=”Colorado Rockies” secondlogo=”https://static.sprtactn.co/teamlogos/mlb/100/col.png”][/teammatchup] | [teammatchup link=”#4″ shadow=”true” firstfullname=”Arizona Diamondbacks” firstlogo=”https://static.sprtactn.co/teamlogos/mlb/100/ari.png” secondfullname=”Los Angeles Dodgers” secondlogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-los-angeles-dodgers.png”][/teammatchup] |
[anchor name=”4″][/anchor]
[subheader sizedown=”false” text=”Bet Labs’ Diamondbacks vs Dodgers Best Bet: Runs May Be Limited”][/subheader]
[gameheader haspick=”true” picktext=”Under 9 (+100)” league=”mlb” awaylogo=”https://static.sprtactn.co/teamlogos/mlb/100/ari.png” awayname=”Arizona Diamondbacks” awayslug=”arizona-diamondbacks” homelogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-los-angeles-dodgers.png” homename=”Los Angeles Dodgers” homeslug=”los-angeles-dodgers” date=”Tuesday, May 20″ time=”10:10 p.m. ET” network=”MLB.TV” bookname=”bet365″ bookprimarylogo=”https://assets.actionnetwork.com/859377_Bet365@1x.png” bookreviewslug=”bet365″][/gameheader]
By Bet Labs
This system targets unders in the second game or later of a series in which both teams have winning records.
Battles between winning teams usually equate to rosters with quality pitching and competitive on-field matchups. The public typically bets the over — likely expecting fireworks between top teams — which creates contrarian value on the under. By capitalizing on low public support for the under (≤35%), this system fades public perception in favor of market inefficiencies, especially when bettors overestimate offensive output late in a series.
Pick: Under 9 (+100)
| [teammatchup link=”#1″ shadow=”true” firstfullname=”New York Mets” firstlogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-new-york-mets.png” secondfullname=”Boston Red Sox” secondlogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-boston-red-sox.png”][/teammatchup] | [teammatchup link=”#2″ shadow=”true” firstfullname=”Atlanta Braves” firstlogo=”https://static.sprtactn.co/teamlogos/mlb/100/atl.png” secondfullname=”Washington Nationals” secondlogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-washington-nationals.png”][/teammatchup] | [teammatchup link=”#3″ shadow=”true” firstfullname=”Philadelphia Phillies” firstlogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-philadelphia-phillies.png” secondfullname=”Colorado Rockies” secondlogo=”https://static.sprtactn.co/teamlogos/mlb/100/col.png”][/teammatchup] | [teammatchup link=”#4″ shadow=”true” firstfullname=”Arizona Diamondbacks” firstlogo=”https://static.sprtactn.co/teamlogos/mlb/100/ari.png” secondfullname=”Los Angeles Dodgers” secondlogo=”https://images.actionnetwork.com/blog/2023/08/2023-mlb-logo-los-angeles-dodgers.png”][/teammatchup] |
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