Baltimore Orioles vs. Miami Marlins Prediction May 13

The NRFI market for Baltimore Orioles vs. Miami Marlins has hit its ceiling. A near-50-point price surge in 24 hours pushed the no-run-first-inning outcome to 100% probability. Both starting pitchers posted elite first-inning performances in 2026. The market priced that in quickly.

Baltimore and Miami meet at loanDepot park on May 13 at 6:40 p.m. ET. Total volume sits at $576,639, with NRFI at 100% implied probability and YRFI at 0%.

Where the Big Money Landed

Every large-trade position in this market backs NRFI. No significant capital exists on the opposing side. The distribution is entirely one-directional.

Trader 05143 placed the defining bet, buying $60,901 on NRFI at 45 cents. That entry has generated +$30,500 in profit-and-loss, with the price climbing six cents since placement. The signal classification registers as very high.

A single whale controlling the dominant position with zero opposing capital reinforces the 100% probability reading. Concentration at this level reflects consensus, not random drift.

How To Read This Table

• Trader: Wallet name or abbreviated address from the prediction market leaderboard.
• Amount: Total position size in USD committed to this specific market.
• Team Backed: Which outcome the trader bought.
• ROI: The trader’s all-time return on investment across all markets.

How the Orioles vs. Marlins NRFI Resolves

A NRFI win requires neither Baltimore nor Miami to score in the first inning. Both starters must get through the opening frame cleanly.

• NRFI: 100% market probability. Priced at 1.00.
• YRFI: 0% market probability. Priced at 0.00.

Sandy Alcantara has pitched a scoreless first inning in six of his seven 2026 starts. Chris Bassitt delivered a clean opening frame in three of his last four outings. Miami ranks 28th in wOBA and averages 2.8 runs per game during a 3-6 slump. Baltimore is tied for last in first-inning scoring. YRFI requires both veterans to fail against passive offenses.

Game Stats

• Players
• Team

Starters
T.Ward LF
L.Taveras CF
P.Alonso 1B
G.Henderson SS
A.Rutschman C
C.Mayo 3B
D.Beavers RF
S.Basallo C
B.Young SP
B.Alexander 3B
G.Wolfram RP
T.O'Neill RF
C.Cowser RF
R.Garcia RP
J.Holliday 2B
R.Helsley RP
T.Rogers SP
S.Huff C
S.Baz SP
K.Bradish SP
A.Kittredge RP
C.Tromp C
A.Suárez SP
D.Kremer SP
T.Wells RP
Y.Cano RP
C.Weston RP

INJURY REPORT

NAME	POS	STATUS	INJURY	NOTES
Ryan Helsley	POS RP	STATUS Questionable	INJURY Elbow	Notes Helsley is dealing with elbow soreness and is uncertain to take the field for the Orioles.

full roster and injuries

Starters
X.Edwards 2B
K.Stowers LF
O.Caissie RF
J.Mack C
J.Marsee CF
J.Sanoja 3B
L.Hicks C
E.Pérez SP
O.Lopez SS
E.Ruiz RF
H.Hernández LF
G.Conine LF
L.Jiménez 3B
S.Alcantara SP
M.Meyer SP
P.Fairbanks RP
T.Phillips SP
J.King RP
M.Petersen RP
C.Faucher RP
T.Zuber RP
C.Gibson RP
Z.Brzykcy RP
B.Navarreto C
R.Gusto SP
L.Bachar RP

full roster

BAL

MIA

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Market Signals and First-Inning Context

Momentum reads as a single composite signal. A 24-hour price gain combined with a trend score of 46.15 and a flat one-hour reading shows a market that surged and stabilized at its ceiling. Strong first-inning starts from both pitchers drove the repricing in early May.

Volume confirms conviction. This market generated $571,824 in 24-hour volume against $576,639 total. Liquidity at $244,850 backs the ceiling. Secondary markets include a spread of -1.5 and a total of 8.5 as UI reference data. Key factors:

• Alcantara first-inning command: Scoreless in six of seven 2026 starts. Off-speed arsenal neutralizes early contact. (+49.5% 24h shift)
• Bassitt recent form: Clean opener in three of last four starts. Seven strikeouts last time out.
• Miami lineup passivity: 28th wOBA. 2.8 runs per game in recent stretch.
• Baltimore early offense: Tied for last in MLB in first-inning scoring.
• Whale concentration: 100% of large capital on NRFI. Zero opposing positions recorded.

Lines Analysis: The NRFI Market

Alcantara’s changeup and slider combination keeps Baltimore passive and generates weak contact in early counts. Bassitt’s command has been consistent across multiple recent outings. Both starters profile as first-inning assets against these lineups.

The YRFI path depends on chaos. Jordan Westburg, Jackson Holliday, and Ryan Mountcastle remain on Baltimore’s injured list, thinning the first-inning threat. Miami would need a leadoff baserunner and timely contact in the same half-inning to flip this market. The $576,639 total volume reflects a market that has fully priced both pitchers’ histories.

• Watch Alcantara’s first-batter approach. Early strikeouts lock NRFI.
• Any late pitching change before first pitch resets this market entirely.
• Key Orioles absences on the injury list reduce first-inning run potential.
• loanDepot park’s dome eliminates weather variables.

LINES VERDICT

NRFI

Alcantara and Bassitt carry the best combined first-inning profiles on the May 13 slate. Both face lineups that rank among baseball’s most passive early.