A's right-hander A.J. Griffin has been pretty unlucky in his last few starts. While Griffin has a 3.60 ERA in his last three outings and has held opponents to a .213 average, he has an 0-2 record.
However, his luck may change on Saturday when the A's take on the Mariners in Oakland.
That's because the right-hander is 4-0 with a 2.76 ERA in five starts against American League West competition this season.
He took a loss on Sunday to the White Sox, allowing four runs on seven hits in 7 1/3 innings.
"Bob [Melvin] asked me how I felt after the seventh, I told him, 'Great,' and it's nice he stuck with me," Griffin said after the start. "It [stinks] when you go out there and feel like you let him down, but overall I felt like I battled and I just wasn't good enough for us."
Griffin will have some tough competition in Mariners right-hander Felix Hernandez, who ranks fourth in the AL in ERA (2.49), third in strikeouts (102) and third in innings pitched (97 2/3).
He took a no-decision on Sunday against the Yankees, holding them to one run on five hits in seven innings. It marked the 24th career game he's allowed one or fewer runs in seven or more innings pitched and not recorded a victory.
"I was a little strong in the first two innings," Hernandez said after the start. "It was all happening too quick. But after that, you just try to calm down and make good pitches."
Hernandez faced the A's back on Opening Day, allowing just three hits in 7 2/3 innings for the win. He's 14-6 with a 2.70 ERA in 27 career starts against Oakland.
Mariners: Shoppach designated; Blanco added
• Seattle signed free agent Henry Blanco to a Major League contract on Friday and designating Kelly Shoppach for assignment.
The 41-year-old Blanco, in his 16th Major League season, appeared in 15 games for the Blue Jays this season before being released on Monday.
"We had him targeted over the winter and weren't able to get it done, so when he became available we were immediately interested," Mariners manager Eric Wedge said. "His character is impeccable, he's experienced everything in the game. We felt like if there's someone to work alongside [Mariners rookie catcher Mike] Zunino there's nobody better at that position."
The Mariners had signed the 33-year-old Shoppach this past offseason, and he hit .196 with three home runs, nine RBIs and a .638 on-base plus slugging percentage in 35 games, including 32 starts.
A's: Top pick McKinney inked
• Oakland agreed to terms with two of their top three Draft picks on Friday, including first-round selection Billy McKinney. The club also locked up shortstop Chad Pinder, a competitive balance pick following the second round.
McKinney, selected 24th overall in the 2013 First-Year Player Draft, is a center fielder out of Plano (Texas) West High School. One of the best high school hitters available in the Draft, McKinney hit .372 with four home runs and 17 RBIs as a senior.
Pinder, the 71st overall selection, was a First Team All-ACC selection this spring at Virginia Tech after hitting .321 with eight home runs and 50 RBIs in 60 games.
The A's have now agreed to terms with 27 picks from the Draft, including four of their top six selections.
• The A's have 11 wins this season in games decided in the last at-bat, which is tied for the AL lead.
• The Mariners are 19-6 this season when scoring four runs or more and 13-4 when scoring five runs or more.