 PlanBaltimore.com or call us at 410-645-PLAN. The Orioles begin a three-game series with the Seattle Mariners tonight in the Emerald City. The O's are 53-31 and tied for first in the American League East. The Mariners are 47-39, tops in the AL West. The Orioles will send Grayson Rodriguez to the mound. And now, here's a look at the exclusive WCBM Weather Channel forecast.