The A's reportedly have signed left-handed pitcher Donnie Hart to a minor-league deal.
MLB.com's Mark Feinsand had the report on the reliever Tuesday.
Hart, 29, has four seasons of major-league experience across three teams.
Last season across the Mets and Brewers (in only five games), he struck out three and walked four in 7.2 innings.
In four big-league seasons, he posted a 3.13 ERA in 89 seasons.
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In November, Hart rejected his outright assignment to Triple-A Syracuse.