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The Orioles are in Seattle tonight to begin their three-city West Coast road trip, and they’re trying to cool off a Mariners team that’s won seven games in a row and 12 of 14.

Cedric Mullins came off the injured list today and is playing center field, but manager Brandon Hyde is batting him fifth behind right fielder Ryan O’Hearn. Mullins is slotted fifth for the fifth time this season.

Adley Rutschman holds onto the leadoff spot, with shortstop Gunnar Henderson batting second.

Colton Cowser is in left field. Adam Frazier returns to Seattle and is starting at second base.

Ryan Mountcastle will attempt to extend his hitting streak to 13 games and his on-base streak to a career-high 18. He’s batting sixth and playing first base.

O’Hearn hit his career-high 14th double yesterday.

Kyle Gibson has registered four quality starts in a row and five in his last six outings. He faced the Mariners on June 23 in Baltimore and allowed five runs and seven hits with three walks in three innings in his shortest start as an Oriole.

J.P. Crawford, who is on the 7-day concussion injured list, is 6-for-12 with two doubles against Gibson.

The Orioles won two of three games against the Mariners earlier this year. However, they have an 11-19 record against Seattle since the beginning of the 2018 season.

The night begins with the Orioles leading Tampa Bay by three games in the American League East.

Seattle right-hander Luis Castillo, an All-Star this year, has a 3.21 ERA and 1.049 WHIP in 23 starts. He’s struck out 155 batters in 137 1/3 innings and accounts for 14.8 percent of the team’s strikeouts, the fifth-highest percentage in the American League, according to STATS.

Castillo was rocked in his last start in Anaheim, allowing seven runs and 10 hits in six innings. He surrendered three home runs.

Castillo has never faced the Orioles. O’Hearn is 5-for-10 with a double against him. Frazier is 3-for-16.

The Mariners are 24-10 (.706) since July 1, the best in the majors. Their 3.25 ERA in that span is the lowest in baseball.

For the Orioles
Adley Rutschman C
Gunnar Henderson SS
Anthony Santander DH
Ryan O’Hearn RF
Cedric Mullins CF
Ryan Mountcastle 1B
Adam Frazier 2B
Ramón Urías 3B
Colton Cowser LF

Kyle Gibson RHP