Petr Yan defeated Magomed Magomedov by Decision in the Bantamweight main event of ACA 57: ACB 57, held Saturday, April 15, 2017.
ACA 57: ACB 57 was an MMA event from Absolute Championship Akhmat, held Saturday, April 15, 2017. 57 is part of ACA's numbered event series. 12 fights took place on the card.