Seattle's nine-game winning streak on Opening Day is the longest in the Majors since the Reds won nine in a row from 1983-91 and is tied for the longest in the American League since the St. Louis Browns from 1937-45.
Felix Hernandez has played a big part as he's 6-0 with a 1.48 ERA in eight career Opening Day starts.
After a three-game series in Texas, the Mariners open their home slate April 8 against the A's at Safeco Field.
Major League Baseball also announced that for the second straight year, all games on the final day of the regular season will begin at noon PT. The Mariners conclude their regular season Oct. 2 against the A's at Safeco.
The full Opening Day lineup on ESPN (times listed are PT):
Sunday, April 3
Cardinals at Pirates, 10:05 a.m. (ESPN)
Blue Jays at Rays, 1:05 p.m. (ESPN2)
Mets at Royals, 5:35 p.m. (ESPN)
Monday, April 4
Astros at Yankees, 10:05 a.m. (ESPN)
Mariners at Rangers, 1:05 p.m. (ESPN)
Dodgers at Padres, 4:05 p.m. (ESPN)
Cubs at Angels, 7:05 p.m. (ESPN2)
Greg Johns is a reporter for MLB.com. Follow him on Twitter @GregJohnsMLB, read his Mariners Musings blog, and listen to his podcast. This story was not subject to the approval of Major League Baseball or its clubs.