McFarland signed a one-year contract with the Athletics on Thursday.
McFarland (2-3) took the loss against the Astros on Thursday, allowing two earned runs on two hits over one-third of an inning. He did not walk or strike out a batter.
McFarland (2-2) took the loss and a blown save against the Tigers on Saturday, allowing two unearned runs on a hit and a walk over one-third of an inning.
McFarland (2-1) got the win against the White Sox on Wednesday, firing a scoreless seventh inning during which he allowed a hit and recorded a strikeout.
McFarland (1-1) took the loss against the Diamondbacks on Sunday, allowing three earned runs on a hit, a hit batsman and a walk over one-third of an inning.
McFarland recorded his ninth hold in a win over the Royals on Wednesday, retiring the only batter he faced.
McFarland (1-0) got the win against the Orioles on Sunday, firing a perfect eighth inning during which he recorded two strikeouts.
The Athletics acquired McFarland from the Dodgers in exchange for cash considerations and selected his contract from Triple-A Las Vegas.
McFarland signed a minor-league contract with the Dodgers on Friday that includes an invitation to spring training, Fabian Ardaya of The Athletic reports.
McFarland signed a minor-league contract with the Orioles on Saturday, Roch Kubatko of MASNSports.com reports.