Pineiro worked 6 2-3 innings, his longest of five spring appearances, and allowed only two hits and a run with two walks and two strikeouts.
Over his last 15.2 innings, Pineiro has allowed three earned runs. His spring ERA is now 3.48.
Royals starter Kyle Farnsworth made his second start and fifth appearance of the spring and allowed one hit in two innings.
Royals closer Joakim Soria was hit hard, allowing four hits and four earned runs without recording an out.