Curtiss will serve as the opener Thursday against the Yankees, Marc Topkin of the Tampa Bay Times reports.
The 27-year-old has yet to pitch in the series, but he'll take the mound as the opener for the series finale. Curtiss has a 2.84 ERA, 0.79 WHIP and 7:0 K:BB through 6.1 innings this season, and he's likely to be followed by Trevor Richards in the bulk role.