Stanek is expected to be called up from Triple-A Durham on Friday, Marc Topkin of the Tampa Bay Times reports.
The hard-throwing 2013 first-round pick generated an unsightly 6.39 ERA over 13 appearances with the Rays in two previous stints this season, but he's been dominant with the Bulls. Stanek has allowed just two earned runs in his past 23 appearances in Durham and has posted a 1.21 ERA overall. He's also notched eight saves in as many opportunities and will serve as another late-inning option for manager Kevin Cash during the stretch run.