Hernaiz went 2-for-4 with two doubles and an RBI during Thursday's 3-1 win over the Rays.
The 22-year-old entered Thursday's contest with zero doubles in 113 plate appearances but notched a pair of two-baggers off Jeffrey Springs. While the Hernaiz has struggled to a .202/.267/.250 slash line this season, he'll likely continue to see plenty of work down the stretch for the 55-73 Athletics.