Right-hander Jeremy Bonderman has resurrected his career with the Mariners.
Bonderman hadn't pitched in the Major Leagues since 2010 with the Tigers, but he has been a steady starter with Seattle, going 1-1 with a 3.30 ERA in five starts since being called up from Triple-A Tacoma. He's managed a 1-0 record with a 1.42 ERA in his last four outings.
He'll look to continue that pace on Sunday as the Cubs and Mariners square off in the rubber match of the three-game set at Safeco Field.
While Bonderman has dealt with elbow and shoulder issues throughout his career and doesn't have the same velocity that he used to, the 30-year-old has become an all-around better pitcher.
"I think he has more pitchability now than he did," Mariners manager Eric Wedge said. "He's getting a better feel now than he did before, in my opinion. Just from the outside looking in, his mound presence is more mature."
In his last start against the A's, Bonderman allowed two runs on six hits in 5 1/3 innings of work for the no-decision.
"He's thrown the ball well. I'm a big believer in good misses," Wedge said. "When he's missed, he's had good misses, whether it be down or off the plate."
Meanwhile, Cubs right-hander Edwin Jackson (3-10, 5.84 ERA) will look to rebound from a rough start when he takes the hill on Sunday.
Jackson struggled through 4 2/3 innings on Tuesday against the Brewers, allowing six runs on six hits for his second straight loss. It marked the third outing in his last 10 in which he failed to finish the fifth.
"We've got to get more consistency," Cubs manager Dale Sveum said after the game. "We have to try to get that guy who we saw in the first three innings against the White Sox and a couple more outings. It's the consistency with the velocity and the power."
Cubs: Gregg's name mentioned in Trade Deadline rumors
After converting 12 of 13 save opportunities this season, Kevin Gregg's name has been mentioned in rumors leading up to the Trade Deadline.
"It'd be tough to replace," Sveum said of Gregg. "He's done a great job. I guess maybe you could look at [Blake] Parker because he's done it in Triple-A, if those things come to light. You've got to use somebody. It'll be a wait-and-see situation."
Parker posted his first Major League save on Saturday. Gregg is the third closer the Cubs have used this season. They began with Carlos Marmol, who lost the job after the first week. Kyuji Fujikawa then took over until he had was sidelined with elbow problems that resulted in Tommy John surgery.
Mariners: Perez impresses with strong first half
Reliever Oliver Perez has been a great addition to the Mariners' bullpen during the first half of the season.
While he took the loss in Saturday's game against the Cubs, Perez has allowed just two runs in his last 15 appearances.
After being released by the Mets with one year and $12 million still remaining on his contract in 2010, Perez has reestablished himself with Seattle. He posted a 2.12 ERA in 33 games after a midseason callup last year, and he has performed even better this season.
"He's just completely different," Wedge said of the transition. "You look at the way he was in New York, especially at the end there, his stuff, his pitchability and presence is just completely different. He's reinvented himself."
• Mariners rookie second baseman Nick Franklin is hitting .333 over his last 16 games.
• Jackson is 3-0 in his career against the Mariners, which includes a 2-0 record at Safeco Field.
Quinn Roberts is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.