SPORTS·SLATE·AI

Rays at Red Sox — MLB Odds, Starters, Weather · Saturday, May 9, 2026

Tampa Bay Rays logo
Rays
40-25
POSTPONED
4:10 PM
Red Sox
27-39
Boston Red Sox logo
MONEYLINE · IMPLIED PROBABILITY
TB
46¢
POLY52¢
KALSHI40¢
BOS
50¢
POLY48¢
KALSHI60¢
DISPERSION 12¢ · venues diverge — potential edge · $1,770,221 combined volume · UPDATED 31D AGO
OUR TAKE · SPORTSSLATEAI MODEL
GENERATED 32D AGO
The model sees Tampa Bay at 50.8% against the market's 42.0%, creating an edge on paper with the Rays' superior run differential (+0.47 to Boston's -0.32). However, this remains essentially a coin flip with Tampa Bay still projected to lose more often than not. Standing down on what amounts to a pick-em despite the theoretical value.
RESULT: VOID
VENUE
Fenway Park
ROOF
Open
WEATHER
59°F · Heavy Rain
SE 6mph · 47% precip
WATCH
NESN · Rays.TV
PROBABLE STARTERS
Nick Martinez headshot
Nick Martinez (R)
TB · 13 GS
ERA
2.43
WHIP
1.16
K/9
5.10
BB/9
1.51
IP
77.7
Payton Tolle headshot
Payton Tolle (L)
BOS · 9 GS
ERA
2.70
WHIP
1.05
K/9
9.11
BB/9
2.36
IP
53.3
GAME PREVIEW · SPORTSSLATEAI
BY SPORTSSLATEAI·UPDATED 32D AGO·462 WORDS

Tampa Bay brings an 8-2 record over their last 10 games into Fenway Park tonight, riding a .658 win percentage that stands as one of the American League's strongest starts through 38 games. The Rays have outscored opponents by 17 runs this season at 4.39 RS/G against 3.95 RA/G, while Boston sits underwater at 17-22 with a -9 run differential and 4.21 RA/G allowed.

The pitching matchup presents an intriguing contrast in sample sizes and early-season performance. Tampa Bay sends Nick Martinez to the mound with a sterling 1.71 ERA across seven starts and 42.0 innings, supported by a 1.02 WHIP and solid command at 2.14 BB/9. Martinez has kept the ball in the park effectively with just 0.64 HR/9 allowed, though his 6.00 K/9 suggests he's pitching to contact more than missing bats.

Boston counters with Payton Tolle, working with a much smaller sample through three starts and 17.7 innings. The left-hander has posted a 2.04 ERA with an impressive 0.74 WHIP, but the strikeout-heavy profile stands out immediately — Tolle's 11.71 K/9 and 34.3% strikeout rate suggest a power pitcher still establishing his major league rhythm. His 3.06 BB/9 shows some command questions, though the small sample caveat applies heavily to all of Tolle's early numbers.

Tampa Bay's offense has found consistent production from Yandy Díaz (.316/.397/.471, .868 OPS) and Jonathan Aranda (.265/.368/.456, .824 OPS), with rookie Junior Caminero adding pop at 10 home runs through 164 plate appearances. The Rays' 4.39 RS/G ranks as solid offensive production, particularly when paired with their run-prevention edge.

Boston's lineup centers around Wilyer Abreu's .873 OPS (.303/.387/.486) and Willson Contreras's power stroke — eight home runs and a .467 slugging percentage through 165 plate appearances. However, the Red Sox have managed just 3.97 RS/G while allowing 4.21 RA/G, creating the negative run differential that explains their sub-.500 record.

The broader pitching picture favors Tampa Bay significantly. The Rays' staff has posted a 3.43 ERA with 1.16 WHIP across 335.7 innings, while Boston's pitchers have allowed a 4.00 ERA with 1.29 WHIP through 333.0 innings. Tampa Bay's staff has also limited home runs more effectively at 0.94 HR/9 compared to Boston's 1.22 HR/9.

The market has priced Boston as a 57-cent home favorite despite the underlying numbers favoring the visiting Rays across multiple categories. Tampa Bay's superior record, run differential, team ERA, and recent form suggest the 42-cent price on the road team offers value. The Rays' combination of Martinez's established season-long performance and their staff's overall run-prevention advantage creates a compelling case against the home chalk.

If you or someone you know has a gambling problem, call 1-800-GAMBLER. Must be 21+. Market prices sourced from prediction markets (Polymarket, Kalshi), not traditional sportsbooks.

RECENT FORM · LAST 5
TB · 3-2 L5
L 3-4
@MIA · 6/6
L 1-4
@MIA · 6/7
W 3-1
vsBOS · 6/8
W 4-3
vsBOS · 6/9
W 7-5
vsBOS · 6/10
OLDEST → LATEST
BOS · 1-4 L5
W 5-3
@NYY · 6/5
L 1-6
@NYY · 6/7
L 1-3
@TB · 6/8
L 3-4
@TB · 6/9
L 5-7
@TB · 6/10
OLDEST → LATEST
INJURIES
Tampa Bay Rays logo
TB12 ON IL
P
Manuel Rodríguez
Details pending
60-DAY · 121D
P
Steven Wilson
Lumbar disc inflammation
60-DAY · 78D
P
Details pending
PATERNITY · 64D
P
Ryan Pepiot
Right hip inflammation
15-DAY · 58D
P
Michael Grove
Right shoulder surgery
15-DAY · 52D
P
Edwin Uceta
Right shoulder impingement
60-DAY · 48D
RF
Hernia
10-DAY · 26D
RF
Right hamstring strain
10-DAY · 19D
P
Right wrist sprain
15-DAY · 16D
LF
Gavin Lux
Right shoulder impingement
60-DAY · 15D
P
Right wrist strain
15-DAY · 14D
P
Details pending
15-DAY · 3D
Boston Red Sox logo
BOS11 ON IL
P
Tanner Houck
Details pending
60-DAY · 121D
1B
Romy Gonzalez
Left shoulder surgery
60-DAY · 91D
P
Kutter Crawford
Right wrist surgery
15-DAY · 81D
P
Right elbow strain
15-DAY · 58D
1B
Triston Casas
Recovery from left patellar tendon repair
10-DAY · 50D
P
Patrick Sandoval
Left UCL surgery recovery
60-DAY · 38D
LF
Right wrist sprain
10-DAY · 37D
1B
Right oblique strain
10-DAY · 11D
SS
Sports hernia
10-DAY · 7D
P
Left shoulder inflammation
15-DAY · 6D
P
Left elbow inflammation
15-DAY · 6D
If you or someone you know has a gambling problem, call 1-800-GAMBLER. Must be 21+. Market prices sourced from prediction markets (Polymarket, Kalshi), not traditional sportsbooks.