Texas Rangers at Seattle Mariners odds, picks and predictions

Analyzing Saturday’s Texas Rangers at Seattle Mariners odds and lines, with MLB expert picks, predictions and best bets.

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The Texas Rangers (89-71) and Seattle Mariners (87-73) play the 3rd of a 4-game set at T-Mobile Park Saturday. First pitch is at 7:15 p.m. ET (FOX). Let’s analyze BetMGM Sportsbook’s lines around the Rangers vs. Mariners odds and make our expert MLB picks and predictions for the best bets.

Season series: Rangers lead 8-3

The Rangers were throttled by the Mariners 8-0 Friday night. Texas remains 1 game up on Houston and 2 up on Seattle in the AL West with 2 games to go. The Rangers have won 7 of 10 and are 28-22 against the AL West.

The Mariners are a game out of the playoffs with the Astros a game up on them for the final Wild Card. They have won 3 of 4 and probably need to sweep this series in order to punch their ticket. They’ll be all hands on deck this weekend.

Rangers at Mariners projected starters

LHP Andrew Heaney vs. RHP Luis Castillo

Heaney (10-6, 4.28 ERA) makes his 28th start and 34th appearance. He has a 1.38 WHIP, 3.7 BB/9 and 9.4 K/9 through 143 IP.

  • Last appearance: 1 IP, 0 ER, 0 H, 1 BB, 2 K Thursday against the Mariners; he threw 17 pitches
  • Career vs. Mariners: 17 starts, 19 appearances, 4-7, 4.37 ERA, 1.28 WHIP, 10.3 K/9

Castillo (14-8, 3.20 ERA) makes his 33rd start. He has a 1.06 WHIP, 2.4 BB/9 and 10.0 K/9 through 194 1/3 IP.

  • Last start: Loss, 6 IP, 5 ER, 8 H, 1 BB, 8 K Monday against the Houston Astros
  • 2 career starts vs. Rangers: 0-2, 3.00 ERA, 1.17 WHIP, 15 K in 12 IP

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Rangers at Mariners odds

Provided by BetMGM Sportsbook; access USA TODAY Sports Scores and Sports Betting Odds hub for a full list. Lines last updated 11:58 a.m. ET.

  • Moneyline (ML): Rangers +115 (bet $100 to win $115) | Mariners -140 (bet $140 to win $100)
  • Run line (RL)/Against the spread (ATS): Rangers +1.5 (-185) | Mariners -1.5 (+150)
  • Over/Under (O/U): 7.5 (O: -105 | U: -115)

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Rangers at Mariners picks and predictions

Prediction

Mariners 6, Rangers 4

Moneyline

The Rangers are going with an opener to fill in for the injured Jon Gray, who was slated to start. Heaney pitched 2 days ago, and he may only be able to go a 1 or 2 innings. So this will be a bullpen day, and the Rangers have the 6th-worst bullpen ERA at 4.83. The Mariners are hungry, at home and have their stud on the hill.

I’ll take the MARINERS -140.

Run line/Against the spread

The Mariners come in at a solid +150 on the RL. They are just 32-47 on the RL at home, though, which is worrisome. Four of their last 5 wins have been by 2 or more, though. And again, they need this game more.

I’ll take the MARINERS -1.5 (+150) for a HALF-UNIT.

Over/Under

The Over is 4-5-1 over the last 10 meetings between the teams. The Over is 4-2-1 in the last 7. The Rangers going with a bullpen game makes this Over enticing, and 5 of the last 7 meetings have hit this number.

Take the OVER 7.5 (-105).

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