Stone was charged with a blown save against the Pirates on Tuesday, allowing one run on five hits and one walk while striking out three batters over two innings.
Stone was recalled from Triple-A Oklahoma City on Monday and got his first major-league look as a reliever in the fifth inning Tuesday. The right-hander gave up a pair of singles in his first frame but was able to escape trouble; however, he wasn't able to keep Pittsburgh off the scoreboard in the sixth, as the Pirates tallied a run on a trio of singles. Stone has struggled to get runners out in his first taste of the big leagues this season, posting a 12.75 ERA, 3.00 WHIP and 8:8 K:BB over 12 innings.