Yahoo Sports reports: Josh Naylor hit a grand slam during a five-run fifth inning and the Seattle Mariners beat the Baltimore Orioles 6-3 on Monday night. Randy Arozarena had three hits for the AL West-leading Mariners, who have won 10 of their last 13 games. Baltimore, which was 1 for 9 with runners in scoring position, has lost three in a row for the first time since getting swept May 18-20 at Tampa Bay.