Alcantara signed a five-year, $56 million contract extension with the Marlins on Sunday, Craig Mish of SportsGrid.com reports.
Alcantara has spent the past four seasons in Miami, and he'll remain under team control for what would be his first two years of free agency. The right-hander tossed a career-high 205.2 innings across 33 starts last year and posted a 3.19 ERA and 1.07 WHIP.