The Mariners have signed Wily Mo Pena to a minor league deal, the team announced in a press release. WEEI.com's Alex Speier reports (on Twitter) that the deal includes a September opt-out if he is not called to the majors. He will join their Triple-A affiliate in a few days.
Pena, 29, had been released by the Diamondbacks earlier this week. He hit five rather majestic homeruns in 46 plate appearances for Arizona, but he also struck out 19 times and walked not once. Pena hit .363/.439/.726 with 21 homers in 271 plate appearances for their Triple-A squad before being called up for interleague play.