Dean Kremer returned from a six-week stint on the injured list with a right triceps strain to lead the Baltimore Orioles to a 4-1 victory over the Seattle Mariners. Kremer pitched five scoreless innings, allowing just two hits and two walks while striking out eight, lowering his season ERA from 4.32 to 3.93. Ryan O'Hearn contributed significantly with a home run and three RBIs, while closer Craig Kimbrel secured his 21st save of the season, moving into fourth place on the all-time saves list. The Orioles have won the first two games of a three-game series involving division leaders.