The Orioles would like to re-sign McFarland to a minor league deal and start him at Triple-A Norfolk.
McFarland would have made $685,000 after avoiding arbitration. The Orioles designated him for assignment last Sunday after trading for Vidal Nuño and got him through release waivers in order to negotiate a new contract.
McFarland spent time on the disabled list last summer with a knee injury and was 2-2 with a 6.93 ERA and 1.743 WHIP in 16 relief appearances over 24 2/3 innings. He was a non-tender candidate approaching the winter.
The former Rule 5 pick is 12-7 with a 4.27 ERA and 1.548 WHIP in 121 games (two starts) over parts of four seasons.
The Orioles lead the Pirates 2-1 in the top of the third inning after Hyun Soo Kim’s two-out, tie-breaking single in the bottom of the second.
Wade Miley allowed a two-out double to Andrew McCutchen in the first inning and a two-out home run to Eric Wood in the second. He hit Austin Meadows with a pitch before retiring Alen Hanson on a ground ball to end his day.
Miley struck out one batter. He threw 27 pitches, 19 for strikes.
Logan Verrett will work the third inning.