Mariners at Astros

The Houston Astros lead the major leagues in home runs, but it was the Seattle Mariners who used the long ball most effectively during the opener of their three-game set. Seattle matched its season best of four blasts - including back-to-back, 10th-inning shots by Kyle Seager and Danny Valencia - in a 9-7 victory and looks to slay the Astros again Tuesday in the middle contest of the series.

Nelson Cruz and Mike Zunino also went deep for the Mariners, who have won five straight to move within 1 1/2 games of the New York Yankees for the American League's second wild-card spot. Cruz's blast was his 20th of the season, making it the ninth consecutive campaign he has reached that mark. Houston raised its season total to 153 as Carlos Beltran and Jake Marisnick both homered on Monday. The Astros learned Tuesday that that they will be without All-Star shortstop Carlos Correa for six to eight weeks with a torn ligament in his left thumb - he suffered the injury on a swing during Monday's game.

TV: 7:10 p.m. ET, ROOT Northwest (Seattle), AT&T Sportsnet Southwest (Houston)

PITCHING MATCHUP: Mariners RH Sam Gaviglio (3-4, 4.31 ERA) vs. Astros RH Brad Peacock (7-1, 2.63)

Gaviglio will be recalled from Triple-A Tacoma to make his 11th major-league start and 12th overall appearance. The 27-year-old has lost his last three outings and is winless in his past four turns. Gaviglio lost to the Astros on June 24, when he gave up two runs and six hits over six innings.

Peacock has won his last four outings, posting a 1.99 ERA during that stretch. He scattered five hits over six scoreless innings against Toronto in his last turn and has given up fewer than three runs in five of his last seven starts. The 29-year-old Peacock has recorded two relief victories against Seattle this season to improve his career ledger to 4-4 with a 5.48 ERA in 10 career appearances (eight starts) and has struggled with Seager (7-for-20, one homer).

WALK-OFFS

1. Seager has homered in three straight games and is 7-for-18 in four contests since play resumed after the All-Star break.

2. Seattle RF Mitch Haniger (finger) is expected to play Tuesday after a two-game absence.

3. Houston RHP Collin McHugh (elbow) will pitch a bullpen session Tuesday and is expected to make his season debut during a weekend series against Baltimore.
Odds
SpreadMoneylineMoneyTotal
Seattle MarinersMariners+1 12  105165
8.50
o 135u -175
Houston AstrosAstros-1 12  -135-185
Moneyline Consensus: Houston Astros: 72.69%     Seattle Mariners: 27.31%
Vegas Prediction: Houston: 5 (Win)    Seattle: 4 (Loss)
Season Series
HoustonStatsSeattle
14-5Vs5-14
.268Batting Average.225
4.9Runs / Game3.7
26Home Runs18
13Errors12